Our 10 Recommendations for the Best Atomic Alarm Clocks:
The 10 Best Atomic Alarm Clocks Reviews:
Bestseller No. 1 
DreamSky Auto Set Alarm Clock for Bedroom, Digital Desk Clock with 0-100% Dimmable Brightness Dimmer, Auto DST, Date, Temperature, USB Ports, Snooze, Electric Bedside Clock Nightstand
- Auto setting alarm clock with full range dimmer: 4.3 Inches large LCD screen displays eye easy catch blue digit, time and content are easy to read at a glance. 0%-100% adjustable dimmer enable you to set the brightness of display to a comfortable level at will.
- Advance autoset time: The clock will sets itself to the correct time once plug in, hassle free to set time. Cell button battery included as backup battery, which will store the time, date and alarm setting during main power outage, however it will not support the time display nor trigger the alarm.
- Self setting clock with auto DST and selectable time zone: Automatically adjusts to Daylight Savings Time while set the DST on. Four USA time zone selectable per your location (EST/ CST/ MST/ PST).
- Ascending soft 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 ports: one USB port connect the DC adapter (included) power on the clock. Let the other port charging your smart device like cellphone, tablet and mp3 players etc. Convenient and organized.
SaleBestseller No. 2 
SHARP Digital Alarm with AccuSet - Automatic Smart Clock, Never Needs Setting - Great for Seniors, Kids, and Everyone who Doesn't Want to Set a Clock! Black Case with Red LEDs
- AccuSet Automatic Time Set - The clock is pre-programed with the time so there is no need to worry about setting buttons. Just select your time zone at the bottom of the clock and turn on the DST if applicable. Plug the clock in to an approved electrical source.
- Quick Daylight Savings Time (DST) Adjustment - For quick adjustment for Daylight Savings Time, slide the DST switch at the bottom of the clock to ON to add and hour (+1 hr.). For Standard Time slide switch to OFF to subtract an hour (-1 hr.)
- High/Low Dimmer control - Adjust the display brightness to your liking with the high or low dimmer control.
- Back up Battery -The button cell battery CR2032 is pre-installed and is used for the back up battery and the time settings. It is in a screw-secured cabinet at the bottom of the clock. This battery will last for several years.
- Time Zone Selection - The default time zone is Eastern Standard Time. Before you plug in the set your time zone on the bottom of the clock.
SaleBestseller No. 3 
Sharp Atomic Desktop Clock with Color Display - Atomic Accuracy - Calendar & Day of Week Time/Date Display - Dual Alarm Clock - Color Display
- Color Atomic Alarm Clock - Accurate to the Second! The Atomic Clock has a built in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute of Standards and Technology (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within on second as it receives daily WWVB updates.
- Color Calendar and Day of Week Display - Always know what day of the week it is with a quick glance. The clock displays the calendar and the day of the week. Using the Snooze/Dimmer switch on top of the display, you can easily adjust the display brightness to your liking.
- EASY TO SET DUAL ALARM - Set alarm for two people, or set one alarm for weekdays and the other for weekend!. Snooze/Dimmer Switch is simple to use and on top of the display.
- BATTERY BACK-UP - There is a "No Worry" battery back-up option (requires 2 x AAA battery, sold separately), that will allow the alarm to go off, even if the power goes out. The battery back-up stores the time and alarm settings if the power is interrupted. During battery back-up the clock’s display will not be lit. Once power is restored, the display will re-light.
- ALWAYS ON DISPLAY – Display is always illuminated. You can use the Snooze/Dimmer switch on top of the display, to easily adjust the display brightness to your liking. NOTE: The screen will go dark while the clock is setting and searching for the Atomic Signal. Once signal is located, the screen will always be illuminated.
SaleBestseller No. 4 
BOZYBO Digital Clock with 6 Alarm Clocks: Atomic Clock with Indoor Temperature Self Time Correction Clock with Day and Date for Elderly Adjustable Brightness Wall Clock or Desk Clock for Bedroom
- Digital Alarm Clock: BOZYBO Digital clock has 6 alarm clocks to program your day and week. It comes with three stickers to DIY your alarm clocks. Colored digital clock with large numbers to show information including: time, day of the week, date, year, indoor temperature, DST, time zone and moon phase.
- Atomic Clock for Bedrooms with WWVB Function: The atomic clock has four time zones (P: PST, M: MST, C: CST, E: EST) and has the ability to sync to the correct time at night with the atomic WWVB function. With DST ON, the clock will adjust to daylight savings time automatically. After initial setup the clock will automatically sync to the correct time during the night with the WWVB function on.
- Digital Clock with Large Display: Equipped with 7.5" HD colorful screen, you can read the screen from any angle, including on a desk or hanging on a wall. Large display with adjustable backlight will be helpful to read information easily, including different colors for each function. Plugs into a wall outlet and can also be run via battery backup to ensure seamless use during power outages.
- Easy to Set Digital Calendar: Operation buttons and Snooze function are accessible when clock is freestanding or hanging on a wall. Includes detailed written user manual for ease of setup and use. Includes an indoor temperature reading to help you plan your day and comfort level.
- Gift Idea: Well packaged digital clock with large display is a great gift for family members, including older adults due to the large, clear display. The clock is well-designed to match any bedroom, living room, office, or home. A great gift for Mother's Day and Father's Day.
SaleBestseller No. 5 
DreamSky Digital Alarm Clock with Battery Backup for Bedroom, Auto Set Clock with USB Charging Ports, 5 Inch Large Display with Date Weekday Temperature, Auto DST, Brightness Dimmer, Snooze, 12/24H
- Large Display with Full Range Dimmer: 5“ 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*AAA batteries( not included) as backup, which will store the setting and keep the time works in case of main power outage.
SaleBestseller No. 6 
La Crosse Technology 617-1485B Atomic Color Alarm Clock with USB Charging Port
- Atomic self-setting time and date with automatic Daylight saving time reset
- USB charging port for mobile devices (charge cable not included)
- Indoor temperature & humidity with trend arrows
- Adjustable backlight settings
- Moon phase icons
Bestseller No. 7 
Geevon Small Atomic Travel Alarm Clock with Auto/8s Backlight, 2 Alarm Settings, Temperature, Increasing Beep Sounds Digital Atomic Travel Clock Battery Operated for Bedroom, Bedside
- 【Two Backlight Modes】The small travel clock features Auto light function and 8s backlight.When it is in darkness, it triggers a soft nightlight to illuminate the display automatically after the switch is flipped to "ON" . When you togged the night light to "OFF" , tap the top button to turn on the soft, orange backlight and it will stay on for 8 seconds
- 【Enhanced Atomic Clock Technology】Small Atomic alarm clocks with indoor temperature will always be accurate to within one second as it receives daily WWVB updates, just select your time zone at the setting buttons of the bedroom clock and turn on the DST if applicable,help you manage regular life
- 【Dual Alarms & Snooze Function】Not only a loud Travel Alarm Clock, but also a Calendar and Thermometer. When the alarm goes off, this dual alarm digital clocks will send out a gradually ascending "beeping" sound which continues for 2 minutes to wake you up. Perfectly designed for heavy sleepers adults.Before the alarm stops itself, touch the "SNOOZE" button to get an extra 5-minute nap
- 【Temperature Monitor】There is an indoor temperature gauge monitor in this travel alarm clock（Hold and press “UP ” for 2 seconds to select °C or °F）.Temperature range is 14.2 to 122 Fahrenheit (-9.9 to 50 Celsius) with tolerance +-1.8 Fahrenheit (+-1 Celsius), allows you keep an eye on indoor temperature conditions.Just like a companion to protect your health
- 【Multifunctional wireless alarm clock】The Geevon smart night light digital alarm clock measures 3.5 (L) * 1.4 (W) * 3.8 (H) inches, small and light. It is an easy cordless battery alarm clock, powered by 2 AA batteries (not provided), features clear LCD display, atomic clock, calendar, smart night light, 8s backlight, 12 / 24-hour, indoor temperature.Basic bedside table alarm clock easy for kids, teens, adults to use
Bestseller No. 8 
AcuRite 13024 Atomic Dual Alarm Clock with USB Charging, Black
- Atomic Clock features split-second accuracy and automatically adjusts for DST
- Monitor indoor temperature right from your nightstand
- Set 2 separate alarms for daily, weekday, or weekend use
- USB power port charges your cell phone while you sleep, AC adapter-powered with battery backup in case of power loss.
- Kindly refer the user manual given below for troubleshooting steps.
SaleBestseller No. 9 
La Crosse Technology 617-249 1.8" Curved Blue Digital Atomic Dual Alarm Clock, 6.60" L x 1.55" W x 3.45" H, Black
- Atomic time (Manual set option) and automatic DST updates (on/off)
- Curved LED with bright 1.8Time display
- 1 amp USB charging port (charge cable not Included)
- Dual alarms (A1 & A2) with 4 stage ascending sound
- Programmable snooze (5-60 minutes) and adjustable brightness & volume
SaleBestseller No. 10 
BALDR Atomic Alarm Clock - Large Color Display Digital Desk Clock - With Indoor Thermometer for Temperature & Humidity - Date & Real-Time Moon Phases - Perfect Office Clock or Nightstand Clock (Black)
- ULTRA EASY SETUP: By setting the time zone on the smart clock and leaving it plugged in overnight, our atomic clock will automatically adjust the time and calendar date using the WWVB radio broadcast from the US National Institute of Standards and Technology (NIST) in Fort Collins, Colorado, while also self-updating for daylight saving time (DST); note that the atomic feature is only available in North America and typically operates at midnight or in the early hours of the morning.
- SHARP COLOR LCD DISPLAY: Featuring a white backlit display with adjustable screen brightness, our electric atomic clock is designed for easy reading day or night without causing any disturbance during sleep; with large and vivid digits, it displays the time, date, day, and indoor temperature and humidity, and also offers real-time moon phases for those who track the lunar cycle.
- ALARM WITH SNOOZE: Crafted to serve as the ideal bedroom digital clock, our atomic time alarm clock includes a snooze button at the top for added convenience on mornings when getting up is a challenge; with an electronic calendar function, it is also an excellent choice for use as desk clocks in offices, businesses, or homes, and offers superior indoor temperature readings - making it the perfect digital atomic calendar clock for any setting.
- BUILT-IN BACKUP BATTERY: Our self-setting digital clock is primarily powered by the included AC adapter, but in case of power interruption, our LCD atomic clock comes equipped with a built-in CR2032 cell battery that stores your time and alarm settings, giving you peace of mind that your preferences will remain intact once the power is restored; additionally, a low battery warning will appear when it's time to replace the cell battery for your convenience.
- ADJUSTABLE BACKLIGHT: Our backlit clocks provide adjustable brightness options of 100%, 50%, 3%, or off, making them easy on your eyes and ensuring comfortable usage; if you're looking for the perfect alarm clock with date and time, our premium-quality atomic self-setting clock is the ideal choice.
Last update on 2023-06-07 / Affiliate links / Images from Amazon Product Advertising API