10 best caesium clocks

A caesium clock, also known as a cesium atomic clock, is a highly precise and advanced timekeeping device used for scientific and metrological purposes. These clocks are not typically associated with alarm clocks or home decor but are instead used in laboratories, research institutions, and for maintaining the global standard for timekeeping. Here are some key points about caesium clocks:

  1. Principle of Operation: Caesium clocks operate based on the vibrations of atoms of the element cesium (usually the isotope cesium-133). The frequency of these atomic vibrations is incredibly stable and serves as the basis for measuring time.

  2. Atomic Transitions: Caesium atomic clocks rely on the behavior of cesium atoms when subjected to microwave radiation. The atoms undergo specific energy level transitions, and the precise frequency of these transitions is what defines the standard unit of time known as the "second."

  3. Accuracy: Caesium clocks are known for their exceptional accuracy. They can measure time with a level of precision that far exceeds traditional mechanical clocks or even most quartz crystal-based electronic clocks.They are accurate to within a few billionths of a second (nanoseconds) per day.

  4. Standard for Time: The International System of Units (SI) defines the second based on the vibrations of cesium atoms. This definition has been used as the international standard for the second since 1967.

  5. Applications: Caesium clocks are used in a wide range of scientific and technological applications where precise timekeeping is essential. These include telecommunications, satellite navigation systems (e.g., GPS), global time synchronization, and scientific experiments that require accurate timing.

  6. Primary Reference Clocks: Caesium atomic clocks are often used as primary reference clocks in national standards laboratories. They are the foundation for maintaining Coordinated Universal Time (UTC), the time standard used worldwide.

  7. Cesium Fountain Clocks: A more advanced type of caesium clock is the cesium fountain clock, which uses a cloud of cesium atoms to measure time. These clocks are even more accurate than traditional caesium beam clocks.

  8. Research and Development: Ongoing research in atomic physics and quantum technology aims to create even more precise atomic clocks using elements other than cesium, such as strontium or ytterbium. These optical lattice clocks have the potential for even greater accuracy.

In summary, caesium atomic clocks are ultra-precise timekeeping devices based on the stable vibrations of cesium atoms. While they are not associated with alarm clocks or home decor, they play a crucial role in scientific research, global time synchronization, and maintaining the international standard for time measurement.

Below you can find our editor's choice of the best caesium clocks on the market
  

Digital Alarm Clock for Bedrooms, LED Display Desk Clock with USB Port, Snooze Function, Timer, LED Sound Control, Time Temperature, 8 Alarm Settings

Meross

Based on 2 reviews Check latest price

Product description

Digital Alarm Clock: Simple alarm clock with clearly marked button on top, you will hardly need instructions when setting the time or alarm. Perfect decoration for offices and bedrooms.

No Disturb: The display will auto off after 5s. Even if you put it in the bedroom, it won’t bother you. With snooze and Sound Control Function. Any tap or audible sound within close distance will wake up the led alarm clock.

Monitor Temperature: Monitor temperature at any time to adjust temperature to make you feel comfortable.

Dual Power Supply: This desk alarm clock powered by USB charger, Adapter is not included. Also you can use 2 AAA batteries(Not Included) as a backup power. It will still work normally when your home is out of power.

Simple Configuration: Easy to set 8 sets alarm.

  • USB Powered & Batteries Powered: When you're out with this digital clock, just install 2 AAA batteries on it. Any 5V/1A or above adapters will work with the LED digital alarm clock. Please keep at least one power source after you finish the settings, otherwise you need to set it again. This desk alarm clock is also powered by USB charger
  • Snooze Function: Press the ?¡ãSNOOZE/LIGHT?¡À button to snooze the ring, the digital alarm clock will ring again in 6 minutes, you can snooze 3 times in total. Best alarm clock for heavy sleepers.
  • No Disturb: The digital clock has sound control function. Any tap or audible sound within close distance will wake up the LED alarm clock, the display will auto off after 5s, which Energy-saving and user-friendly for a good sleep and better working environment.
  • Monitor Temperature: It detects timely indoor temperature. Both Celsius and Fahrenheit unit are available. Both 12H and 24H mode are available.So that you can adjust your thermostat to maintain a perfect living environment.
  • More functions: Meross alarm clock could be set by 7 kinds of different countries language to show the week. And it also has world time mode(include 16 City time), timer function, 12/24Hr setting, and month date display.

Product features

It's time to get up
It's time to take a exercise
It's time to go to bed

Alarm Clock for Bedroom, 2 Alarms Loud LED Big Display Clock with USB Charging Port, Adjustable Volume, Dimmable, Snooze, Plug in Simple Basic Digital Clock for Deep Sleepers Kids Elderly Home Office

PPLEE

Based on 1 reviews Check latest price

Product description

SIMPLE OPERATION WITH DUAL ALARMS

This alarm clock can set 2 different alarms, convenient for family members with a different schedule. Basic clock for simple operation but has enough function for daily use.



NO WORRY BATTERY BACKUP

You need to plug it into a 100~240V AC wall power outlet with the included adapter to support all functions working properly. But you can also install 2pcs 1.5V “AAA” size batteries to backup time & alarm setting and trigger an alarm in case of AC power failure (pls note: batteries are not included, and don't support time display).



LARGE DISPLAY WITH ADJUSTABLE VOLUME AND DIMMER

Loud clock with a large clear screen display for vision impaired people. Alarm volume can be adjusted to 4 levels according to your depth of sleep. 5 level adjustable digits brightness dimmer for easy reading time while not affect your sleep.

  • ⏰ 𝗘𝗔𝗦𝗬 𝗧𝗢 𝗨𝗦𝗘 DUAL ALARM CLOCK: This 𝗱𝗶𝗴𝗶𝘁𝗮𝗹 𝗱𝘂𝗮𝗹 𝗮𝗹𝗮𝗿𝗺𝘀 𝗰𝗹𝗼𝗰𝗸 𝗳𝗼𝗿 𝗯𝗲𝗱𝗿𝗼𝗼𝗺 can set 2 different alarms, convenient for family members with a different schedule. A 𝗯𝗮𝘀𝗶𝗰 𝗰𝗹𝗼𝗰𝗸 with enough practical functions for daily use: 4-level adjustable alarm volume, 5-level digits brightness dimmer, built-in USB charging port, SNOOZE function for extra 9 mins sleep, outlet operated with battery backup settings, 12/24H & DST function also available.
  • ⏰ LARGE DISPLAY WITH ADJUSTABLE VOLUME & DIMMER: 𝗩𝗲𝗿𝘆 𝗹𝗼𝘂𝗱 𝗮𝗹𝗮𝗿𝗺 𝗰𝗹𝗼𝗰𝗸 𝗳𝗼𝗿 𝗵𝗲𝗮𝘃𝘆 𝘀𝗹𝗲𝗲𝗽𝗲𝗿𝘀 with 7" LED 𝗹𝗮𝗿𝗴𝗲 𝗰𝗹𝗲𝗮𝗿 𝗱𝗶𝘀𝗽𝗹𝗮𝘆 for vision impaired people, easy to check time from across the room. Alarm volume can be adjusted to 4 levels according to your depth of sleep, louder for heavy sleepers while slight for light sleepers. 5 level adjustable digits brightness dimmer for easy reading, brighter for day while darker for night.
  • ⏰ NO WORRY BATTERY BACKUP SETTINGS WITH SNOOZE: This 𝗽𝗹𝘂𝗴 𝗶𝗻 𝗮𝗹𝗮𝗿𝗺 𝗰𝗹𝗼𝗰𝗸𝘀 𝗳𝗼𝗿 𝗯𝗲𝗱𝗿𝗼𝗼𝗺 is outlet operated for ALL functions working, such as USB charging, alarm and time display. 𝗗𝘂𝗮𝗹 𝗮𝗹𝗮𝗿𝗺 𝗰𝗹𝗼𝗰𝗸 𝘄𝗶𝘁𝗵 𝗯𝗮𝘁𝘁𝗲𝗿𝘆 𝗯𝗮𝗰𝗸𝘂𝗽 time and alarm settings as well as trigger the alarm when power failure. Simply press the “SNOOZE” button on the top to get extra 9 min sleep before it alerts again.
  • ⏰ USB PHONE CHARGER & 12/24H TIME FORMAT & DST: 𝗟𝗲𝗱 𝗯𝗲𝗱𝘀𝗶𝗱𝗲 𝗮𝗹𝗮𝗿𝗺 𝗰𝗹𝗼𝗰𝗸 𝘄𝗶𝘁𝗵 𝗽𝗵𝗼𝗻𝗲 𝗰𝗵𝗮𝗿𝗴𝗲𝗿 allows you to charge your smartphone, iPad or other smart devices, no need to plug them in the wall. 12 or 24 hour time format &Daylight Saving Time is also available. Clear understandable buttons make it 𝗲𝗮𝘀𝘆 𝘁𝗼 𝘀𝗲𝘁, perfect for 𝗸𝗶𝗱𝘀 𝘀𝗲𝗻𝗶𝗼𝗿𝘀. Stylish appearance is suitable for 𝘁𝗲𝗲𝗻𝘀 𝗯𝗼𝘆𝘀 𝗴𝗶𝗿𝗹𝘀 too!
  • ⏰ 𝗚𝗥𝗘𝗔𝗧 𝗚𝗜𝗙𝗧 𝗜𝗗𝗘𝗔 𝗪𝗜𝗧𝗛 𝟯𝟲𝟱 𝗗𝗔𝗬𝗦 𝗣𝗥𝗢𝗗𝗨𝗖𝗧 𝗪𝗔𝗥𝗥𝗔𝗡𝗧𝗬: This cool stuff is not only suitable for your room, but also a great gift for Christmas, New Year or Birthday. It has no limitation, you can give it to kids or seniors, boys or girls, friends or families. PPLEE 𝗱𝘂𝗮𝗹 𝗮𝗹𝗮𝗿𝗺𝘀 𝗰𝗹𝗼𝗰𝗸 also provides 365 days product warranty, any questions, pls contact us via Amazon, we will response in 24H.

Product features

PPLEE Digital Dual Alarm Clock for Bedroom - Easy to Set, Great for Gifts!

This is a very simple alarm clock, without those dazzling complex features, but enough to meet our daily needs. Focusing on the alarm clock itself makes our lives easier!

Some main features you may want to know:

1> Bedroom clock with dual alarms - it allows you to set 2 different alarms for you and your family members.

2> Large display alarm clock with 7 inch big screen for checking time across the room.

3> Loud alarm clock for heavy sleepers with 4-Level adjustable alarm volume - different people have different sensitivity to the volume of alarm clocks, set your own volume to a more acceptable level.

4> LED digital clock with 5-Level digits brightness dimmer - you may need it to be brighter at day for clearly watching, but dim enough for not bothering your sleep at night.

5> Alarm clock with USB charger - for charging your cellphone or other devices while using this bedside alarm clock.

6> Outlet powered with battery backup settings - need to plug it in for functions working properly, you can also insert 2*AAA size battery to backup time & alarm setting in case of a power outage.

7> Kids alarm clock with SNOOZE function gives you an extra 9 mins sleep before alerting you again.

8> 12-hour or 24-hour Time Format and DST - Daylight Saving Time are also available.

Alarm Clock with 2 Alarms for Different Time Schedule

Considering that despite being a family, everyone will still have different schedules, we designed this loud dual alarms clock to be able to set 2 separately alarms. Wake up at your own alarm time and go do your own things, your partner will wake up at his/her own alarm time.

When alarm goes off, you can

  • Press “SNOOZE” button on the top to turn off the alarm for 9 minutes, this means the alarm will ring every next 9 minutes.
  • Press “ALM PAUSE” button to turn off the alarm for 24 hours, the alarm is still activated and will ring after 24 hours.
  • Press the “ALM OFF” button to cancel alarm forever, this means the alarm will never ring in the future unless you set a new alarm.

AC Powered with Battery Backup Settings

This desk alarms clock is outlet operated, it means you need to plug it into a 100~240V AC wall power outlet with the included cable and adapter for all functions working.

Battery Backup Alarm and Time Settings

This travel alarm clock also allows you to insert 2pcs “AAA” size batteries to the battery compartment to backup alarm and time settings in case of AC power failure.

Batteries are not included and do not support time display, but they can back up time & alarm setting and trigger an alarm even in the event of a power failure!

9 Mins SNOOZE Function & USB Charging Port

This kids bedroom alarm clock gives you extra 9 minutes sleep with the big "SNOOZE" button before alerting you again. Give yourself a buffer before you get up.

This bedside alarm clock also has a built-in phone charger for charging and playing your iPhone, Android, Samsung cellphones and other tablets at the same time.

Adjust Your Own Acceptable Volume & Dimmer

Everyone has a different sensitivity to the volume of this loud alarm clock and the brightness of the screen. This teens boys girls alarm clock allows you to adjust the alarm volume and brightness yourself. The button is clear to see and operation is simple.

Adjust the Time Format According to Your Personal Habits

Some may be used to 12-hour time format while some like the 24-hour time format, this easy to set seniors alarm clock allows you to adjust the time format according to your personal habits.

Hold press "DST' button, you can also adjust the Daylight Saving Time.

Take One for Yourself and Get One for Your Friends

We use alarm clock frequently no matter in the life or the work.

PPLEE also has some alarm clocks which have some complex functions for special users, while this one is designed to be a basic and simple operation clock for home.

For more alarm clock styles, please visit our PPLEE store.

Day Clock w/ Snooze Button, Newest SVINZ 5 Alarms Dementia Clock, 2 Auto-Dim Options, Large 8" Display Wall Digital Calendar Alarm Clock for Vision Impaired, Elderly, Memory Loss, Black, SDC008

SVINZ

Based on 4 reviews Check latest price

Product description

2021 Model NEW Features:

Large Snooze Button on the Top

Enlarged & Concave Buttons

Upgraded 2 Keyholes for Wall-Mounting

Remembers time in event of time outage

9 Minute Snooze Feature

Snooze Times: 3/5/Off

Slim & Sleek Patented Design



Other great Features:

Improved Glare-free HD Screen

Adjustable Alarm Volume

1-5 Alarm Settings

3 Colors Display

Auto Dimming On/Off

8 Language Options

Choice of Alarm Modes: Once, Every day, Weekdays only or Weekends only, Off. UL Certificated Power adaptor



Whether you're looking for the right day clock for an aging loved one or are teaching school children how to read the time and date, our uniquely designed digital alarm day clock is the only one you'll ever need. Aging people faced with Alzheimer's, memory loss and dementia need structure, routine and focus. They often lose the ability to recognize what day of the week it is. Traditional digital clocks have abbreviations, which can be confusing. To prevent this, the day clock by SVINZ has a clear and easy to read screen which helps reduce anxiety about the time of day and ease the worry of missing an appointment, mealtime, or any other key event. Features - Stand alone 8" digital calendar clock - Wall hanging or pull-out stand self standing - Character heights: Day: 1", Time: 1. 1/2", Date: 1/2". - 8" LED screen (175mm) diagonal - 5.55" wide x 4.2" high - 100+ Year Automatic Calendar - Months & Years - Dual Time Mode - 12 or 24 Hour. - Dual Date Mode - DD/MM/YYYY or MM/DD/YYYY. - 8 Languages Built-in. - Auto Night Dimmer - 7 P.M. to 7 A.M. - Silent in operation - Fully automatic calendar changes including Leap Years. - Auto Built-in "On-OFF" Memory Settings - Power Adapter - 100-250V AC - Output DC 5Volt 1amp. What you get: SDC008W Day Clock, AC Adapter, Welcome Guide, Worry-free 12-month Warranty.

  • ✔ BEST CLOCK FOR SENIORS: The high resolution 8 inch display clearly spells out the full DAY of the WEEK, MONTH and DATE in large, bold letters with no confusing abbreviations, also shows MORNING, AFTERNOON, EVENING, NIGHT,PREDAWN during the time: 5:00 am - 11:59 am (MORNING), 12:00 pm - 4:59 pm (AFTERNOON), 5:00 pm - 8:59 pm (EVENING), 9:00 pm - 11:59 pm (NIGHT), 12:00 am - 4:59 am (PREDAWN).
  • ✔ UNIQUE SNOOZE FEATURE: Add the large SNOOZE touch button on the top of the clock and snooze repeat times can be set 3 or 5 times. It owns 3-color display options (White / Yellow/ Black) and 5 alarm settings, which can be set up 1 to 5 individual alarms which are very useful for seniors with daily meals or taking medications.
  • ✔ AUTO DIMMING OPTIONS: The day clock has auto dimming function and dims at 7:00PM (10cd/M2) and brightens up during the day at 7:00 AM (50cd/M2), also it provides the option to turn off the auto dimming function to keep the high brightness all the time, ideal for seniors and people with vision problems.
  • ✔ ENLARGED BUTTONS: The redesigned user interface provides enlarged and concave buttons for easy accessing and easy operation. Upgraded 2 integrated keyholes for easy wall-mounting.
  • ✔ IDEAL GIFT FOR 200,000+ CUSTOMERS : The words Dementia, Alzheimer's and Memory Loss were intentionally excluded from the packaging to alleviate any embarrassment, make as a best gift.

User questions & answers

Question: can you select which color you want the time displayed
Answer: Some of the answers here some confused. Yes this model SDC008W does allow you to choose between a display color of either white numbers and letters or yellow numbers and letters..
Question: Can this clock be hung on a wall
Answer: Yes it can. Great clock so far, my mom has macular degeneration and can see it well.
Question: does the screen display stay lit during power outage when using battery back up
Answer: Hi Sebrina, thank you for your kind inquiry. The backup battery is designed for remembering the correct time, not for powering the clock. So the screen will not stay lit if you don’t use AC adapter.
Question: Purchased this clock for my mom in August. clock now has a blank screen with several lines Cannot be read
Answer: I purchased my clock in July 2019. It’s less than 1-1/2 years old and it just stopped working. Same issue with an unreadable blank screen. How do I fix it?

DreamSky Auto Set Digital Alarm Clock with USB Charging Port, 6.6 Inch Large Screen with Time/Date/Temperature Display, Full Range Brightness Dimmer, Auto DST Setting, Snooze, Backup Batteries,12/24Hr

DreamSky

Based on 5 reviews Check latest price
  • Large Display with Full Range Dimmer: 6.6“ Large LCD screen with nice eye care number display. Time, date and temperature display. Almost full range brightness settable (6 levels + auto dim ), you can easily change to have the view bright or dim it to extremely low.
  • Advance autoset time : The alarm clock will set itself to right time, date and temperature immediately once plugged in. The long lasting button cell backup battery (installed ) will holds all settings and ensure the time always be accurate in case of main power interrupted. What you need to do is set your time zone and wake up time. Simple as that. Even miss the right time, you are still able to set it manually.
  • Auto DST and selectable time zone : Automatically adjusts to Daylight Savings Time while set the DST on .Seven USA time zone (EST/ CST/ MST/ PST/AST/HAT/AKT) and one newfoundland time zone NST selectable for your location.
  • Ascending beeping alarm with snooze: Ascending alarm sound wake you up naturally . Additional snooze to counter oversleeping, simply press the snooze button once and go back to sleep. 8 minutes later the alarm will ring again .
  • Plug in clock with USB charging port: Powered by USB port by plug in outlet. Extra USB charging port for charging cellphone and other electronic device. 3*AA batteries( not included) as backup, which will store the setting and keep the time works in case of main power outage.

User questions & answers

Question: Is it possible to turn off the DST option
Answer: Yes, the DST can be turned off.
Question: What is the small cord with tiny end on backside of clock
Answer: The clock is electric, it is a USB cord that goes into a plug that goes into the outlet.
Question: What is the warrranty information
Answer: Seller warranty: One year free replacement.
Question: Is the time supposed to set automatically
Answer: No. What they call auto time set is that they set the time at the factory. This clock will NOT autoset to the atomic clock signal broadcast from Fort Collins, Colorado.

DreamSky Compact Digital Alarm Clock with USB Port for Charging, Adjustable Brightness Dimmer, Red Bold Digit Display, 12/24Hr, Snooze, Adjustable Alarm Volume, Small Desk Bedroom Bedside Clocks.

DreamSky

Based on 6 reviews Check latest price
  • Large Display Plug in Clocks with Smart Dimmer: Compact Streamline design yet large number display. 2” jumbo illuminated LED digits ensure the time is easy to see even for impaired vision people. The patented smart brightness dimmer design allows you set the brightness of display from 0-100 level by easy turn wheel. Needless worry the brightness, either too bright thus affecting your sleep or too dark to read time.
  • Adjustable Alarm Sound: Single alarm setting with 9 minutes snooze. No harm “ beep” alarm sound can be set from 30-90 DP as person preference . Needless worry the alarm sound, either too loud thus frightening you or too low to wake you up from deep sleeping. One simple ON/OFF button allows you disable the alarm on weekend.
  • USB Charging Port: Convenient USB port allows you to charge your smartphone , ipad or other smart device without plug in wall. handy, convenient and organized.
  • Easy Operation Clock: Intuitive setting button, experience zero stress when setting the time or alarm. Easy for kids, seniors and the elderly.
  • Outlet Powered with Battery Backup: Plug in to power the clock with the included DC adapter . 2* AAA batteries ( not included ) needed for storing time and alarm settings in case of power outage. During the backup battery, the screen will go blank and alarm will not sound .

User questions & answers

Question: No "White" digit option instead of red
Answer: " white" digit clock will be in stock after 2 weeks.
Question: does this alarm clock plug into the wall? i just want a normal plug in alarm clock
Answer: Yes, it does plug in to the wall. It is a regular wall plug adapter and a USB on the part that toes in to the clock. There is a second USB port that allows you to charge your phone right from the clock. A neat clock!!!!
Question: Can the time be read when the clock is mounted above eye level or does it need to be tilted down towards you
Answer: The clock can be read when mounted above eye level.
Question: Size of the entire unit? Thank You
Answer: According to their listing it's 5.3 inches wide, 2.6 inches tall and 1.4 inches deep.

Wittime 5100 Digital Clock for Bedroom, Electric Alarm Clock with Large LCD Display, 2 Alarm Settings, Snooze Function, White Backlight, Smart DST Time, Battery Powered Table Clock for Adults, Kids

Wittime

  • ☂ Large LCD Screen & Multifunction -- Equipped with a large HD LCD screen, you can check the time or date on the electric alarm clock easily without puzzling. Time, date, temperature, and other information are neatly displayed on the display screen for easy searching. It is not only your assistant of time management but also can help you dress correctly according to the temperature.
  • ☂ Smart DST Time & Backlight -- Always forget to switch between summer time and standard time? Wittime’s smart alarm clock will be the best solution! The unique and intelligent function can automatically adjust the time for you. Turn on the backlight and it can provide stable 10s of illumination at night for you.
  • ☂ Dual Alarm Settings & Snooze Function -- The dual alarm clock function is specially designed for deep sleepers. You can set a flexible wake-up time according to your needs. To make getting up more comfortable and natural, a humane snooze function allows you to enjoy extra 5 minutes of the sweet dream without worrying about oversleeping.
  • ☂ Battery Powered & Durable -- Powered by 3 AAA batteries and designed with low battery reminder function. Made of premium material, these table clocks are durable and sturdy, it’s also a fashionable room decor for your house or office!
  • ☂ What You Get -- The package comes with 1 x smart alarm clock, 1 x Instruction, 3 x Batteries. Decent packaging makes it a great gift for your friends or family. We are so sure that you will fall with this digital clock AND Our Worry-Free 12 Month Warranty and lifetime friendly customer service guarantee make your purchase absolutely risk-free.

Product features

Large numbers

Designed with large LCD screen, easy to check the time, perfect for younger and elderly people.

You can check the time, date, temperature, and other information on the clock.

Place it anywhere

The small size(4.5" x 2.75") makes it a perfect alarm clock for you to put it anywhere on the bedside table, nightstand or desk in your home and office.

Battery Powered and Energy Saving

Powered by 3 AAA batteries (included). A pair of new AAA batteries can supply for more than 6 months.

Easy to use

Long press the time/set button till it starts flashing, Now you are entering the time setting. You can use the "up" and "down" button to adjust the data. Then press the time/set button to confirm and jump to the next setting. Below are the settig orders:

1,Day light saving time

2,12/24 hour

3, Time

4, Year

5, Month

6, Date

7, ℃/°F

When finished the ℃/°F setting. The screen will stop flashing and now the time setting is done. You can enjoy your Wittime 5100 digital clock now.

American Lifetime, Newest Version, Day Clock Extra Large Impaired Vision Digital Clock with Battery Backup and 5 Alarm Options, Brown Wood Color

American Lifetime

Based on 14 reviews Check latest price
  • Key features - This unique 8 inch high resolution digital alarm clock clearly spells out the time, period of the day, full day of the week, month and date in large, clear letters with no confusing abbreviations
  • Unique functions - The day clock by American Lifetime is the only one of its kind to include a set of multi-function alarms. Set up to 5 daily alarms, with the option of reminders to take medications throughout the day. This clock uses the DC209 model which has a screen resolution of 800 x 600
  • Battery backup - This day clock also has battery back up a in case of a power outage, it automatically resets to the correct time and date when the power returns
  • Makes for a perfect gift - The words dementia, alzheimer's and memory loss are intentionally excluded from the packaging, making it a great gift. We stand behind the durability of our goods and offer an unconditional guarantee. If you are not completely satisfied with our products, we will refund your money no questions asked
  • Customer service - At American Lifetime you can return the product for free within the first 30 days, no questions asked. Our customer service team is here for you and happy to help answer any questions you may have

User questions & answers

Question: Does the clock automatically re-set in the event of a power failure
Answer: Hi Sandra, thanks for your inquiry. Yes, the DayClock has an internal battery that allows it to automatically re-set itself to the right time and date in the event of a power failure.
Question: DLS function? Dimmable
Answer: This clock does NOT have a DLS function. It must be manually adjusted when there is a time change.
Question: Does it state morning, evening, etc. If so, what does is show at 3:00 am
Answer: Hi there, Thanks for reaching out to us. 12am-5am it says Predawn5am-12pm it says Morning12pm-5pm it says Afternoon 5pm-9pm it says Evening9pm-12am it says NightThe above settings are programmable easily to your preference, or you can remove those words entirely. Kindly, Samantha
Question: Are the time and date visible from all angles
Answer: Hi there! Thanks for reaching out to us. Yes, the time and date are visible from all angles, as the resolution of the screen is very high, so it's clear from all sides. Please let us know if there's anything else we can help you with. Best regards, Samantha, Customer Service @ American Lifetime

Product features

Day Clock by American Lifetime

At American Lifetime, you won’t find any talk of aging, memory loss or dementia on our products or packaging. That’s because we’re not about what’s been lost. We’re about reminding older folks of all they are still holding onto, and everything worth preserving. We’re a U.S based company and source high-quality components for our products. The screens for our Day Clocks are imported from Japan, which makes our clocks exceptionally clear and easy to read.

WallarGe Atomic Clock with Night Light,Digital Wall Clock or Desk Clock,7.6In Digital Alarm Clock,Battery Operated,Auto DST,Calendar,Temperature for Bedroom/Kitchen/Office. (with Backlight)

WallarGe

Based on 603 reviews Check latest price
  • Digital Wall Clock or Desk Clock - Large Digital Display Clock. This is a digital wall clock with table legs, you can fix it on the wall or put it on any table as needed. Its large and clear digital display allows you to see the time from any angle. Even the elderly and people with poor eyesight can read time effortlessly.
  • Radio Controlled Auto Set Clock - Be sure to give you the most accurate time and date, this clock will complete the time calibration by automatically receiving the time signal transmitted by the NIST every day. Suitable for people who have high requirements for time accuracy.
  • Three level Adjustable Brightness - In order to facilitate reading at night, we designed a high-quality photosensitive sensor for it, so as long as the smart light is turned on, once it is dark at night, the screen will automatically light up. It has "off, low, high" three brightness for you to choose.
  • High Precision Temperature Monitor - This is a digital clock with a thermometer that automatically detects the temperature of the surrounding environment. Help you create the most comfortable indoor environment. Suitable for kitchen, bedrooms, living rooms, offices, classrooms, hospitals and other places.
  • Digital Alarm Clock Battery Operated - You can also use it as an alarm clock when you need it. Its alarm will last for 2 minutes. It comes with power-saving technical design, powered by 3 AA batteries(Included), no extra wires, very simple and beautiful.12/24 hour format, 4 time zones and automatic daylight saving time function will also bring you greater convenience.

Travelwey Home LED Digital Alarm Clock - Outlet Powered, No Frills Simple Operation, Large Night Light, Alarm, Snooze, Full Range Brightness Dimmer, Big Red Digit Display, Black

Travelwey

Based on 14 reviews Check latest price
  • Extremely Simple To Operate - The clock has been designed with absolute simplicity in mind and you will have no problem whatsover operating it. Easy for children, seniors and the elderly.
  • Night Light - Scared of the dark? Like to read in bed? No problem. The Travelwey Bedside Alarm Clock comes with a bigger than average night light which can be activated by a simple press of the top button.
  • Loud Alarm And Snooze - The bedside alarm clock comes with an alarm which can be set at Low or High in volume and will continue for 5 minutes ensuring you definitely wake up. There is also a 9 minute snooze that can be continually pressed until the alarm itself is switched off. Perfect for heavy sleepers.
  • Jumbo Illuminated Digits With Dimmable Slider - The red numbers on the clock are very clear with extra bright quality, though for times when a lesser brightness is required such as at night you can use the dimmer slider to reduce the brightness to your own personal comfort level, perfect and unintrusive.
  • AC Electric Powered, With Battery Back Up - To power the clock, just plug in the power cord and you are good to go. Pop in two AAA batteries for back up in case of a power outage. During battery back up the screen goes blank but alarm and time settings are retained and the alarm will still sound

User questions & answers

Question: It looks like the button to turn the alarm off is on the back & not easy to get to. Is this right? Thanks
Answer: To clarify other answers. The center top button turns the nightlight on and off when the alarm is not sounding. When the alarm sounds the center top button is a nine minute snooze. During a power failure the top center button displays the time. To turn alarm off until the next day click on the hour or minute button. To turn alarm off completely use the button on the back.
Question: How large is the display (numbers
Answer: Almost 2 inches tall - HUGE! We got rid of our cable so I was without a clock by my tv. This clock is perfect! The display numbers are even better than my old cable box, Hope this helps.
Question: Does the night light stay on all the time or can it be turned completely off. I don't want to sleep with it on
Answer: I don't think it can be turned off completely. I don't like lights when I am sleeping either, but somehow the red glow does not bother me at the dim setting. The bright setting is meant to guide planes down during the day, I think.
Question: Does any part of the display blink, like maybe the colon
Answer: No, there is no blinking.

REACHER Small LED Digital Alarm Clock with Snooze, Simple to Operate, Full Range Brightness Dimmer, Adjustable Alarm Volume, Outlet Powered Compact Clock for Bedrooms, Bedside, Desk, Shelf(White)

REACHER

Based on 4 reviews Check latest price

Product description

The modern alarm clock is extremely easy to setup; The user-friendly bedside alarm clock with compact size fits for any decoration. Perfect for home, hotel, office, nightstand, shelf and bedroom clock.

Never worry too bright at night

You can adjust the brightness of the digits to any brightness level that feels comfortable to your eyes. Just move the dimmer slider control on the back, have it bright in the day then dim them down at night.

Easy snooze and simple operation

Press anywhere on the top to catch a 10-minute of sleeping. Designed with absolute simplicity in mind, you will feel zero stress to set time and alarm, easy for kids, students, seniors, adults and the elderly.

Adjustable volume level (30-85db)

The alarm sound can be adjusted from 30-85db with volume slider according to your personal preference.

Outlet powered(Not Battery-Powered)

Plug-in to power the clock with the included USB adapter (100-240V) . The 2AAA battery (not included) are just for maintaining the settings for the time and the alarm during a power outage. During battery backup, the screen goes blank and alarm won't sound.

Specifications

Time display: 12-hour time format

Alarm: last for 2 minutes

Snooze: every 10 minutes

Dimensions: 5.6in(length)*2.9in(height)*1.9in(width)

Package included

1*Reacher alarm clock

1*Power adapter

1*User manual

  • Space-saving (5.6" x 2.9" x 1.9") AC powered, with large white LED numbers easy to read day or night; battery backup saves time during power outage. Please NOTE:It is NOT a battery-powered alarm clock.
  • Easy snooze with a simple press of anywhere on the top.
  • Easy-to-use digital alarm clock. Even no need instructions to operate it.
  • Get your personal comfort brightness with 0-100% dimmer slider, and enjoy a fresh morning with adjustable alarm volume from 30-85db.
  • Outlet Powered with Battery Backup : Plug in to power the clock with the included DC adapter . 2* AAA batteries ( not included ) needed for storing time and alarm settings in case of power outage. During the backup battery, the screen will go blank and alarm will not sound.

User questions & answers

Question: Is it possible to make the numbers invisible at night for people who are light-sensitive
Answer: Yes, it has 0-100% dimmer control.
Question: Does this unit have an electrical plug in cord
Answer: Yes
Question: What type of sound does it make
Answer: Buzzer
Question: Can this clock be just battery operated with NO wires
Answer: No, it is outlet powered, the 2AAA battery (not included) are ONLY for maintaining the settings for the time and the alarm during a power outage. During battery backup, the screen goes blank and alarm won't sound.

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