10 Best Atomic Alarm Clocks 2021

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

Sonic Bomb Dual Extra Loud Alarm Clock with Bed Shaker – ⭐ Best Overall Atomic Alarm Clock

SBB500SS by Sonic Alert

  • Release date: 10/30/2007
  • Color: Multicolor
  • Weight: 1 pounds
  • Dimensions: 7 x 7 x 6 inches
  • Warranty: 1 year parts, 1 year labor.
Sonic Bomb Dual Extra Loud Alarm Clock with Bed Shaker
  • THE ORIGINAL VIBRATING ALARM CLOCK- Since 1980 the Sonic Alert Sonic Bomb Alarm clock has been the strongest alarm shaker on the market for heavy sleepers and deaf individuals. The super loud alarm clock of 113 dB and flashing lights along with battery backup provide assurance that you will wake on-time. 1 year warranty
  • LOUD DUAL ALARM CLOCK WITH SNOOZE – Set multiple alarms with a duration of your desire from 1-59 mins and a snooze feature from 1-30 minutes. The super loud alarm clock sound will flash lights. You can also choose either the 12 or 24-hour time format
  • BATTERY BACKUP & FULL RANGE DIMMER – An essential for every alarm clock, the battery backup provides security to wake on-time. A full range dimmer to control the brightness of the clock to wake up fully rested and restored
  • EASY TO USE - Simple clearly labeled alarm settings. Turn knobs to set volume and tone. Easy switches and button to control multiple alarms, dimmer, snooze, and clock. Place on desk or night table for easy access
  • SONIC ALERT– Award winning globally recognized leader in the international electronics field, helping the deaf, hard to wake, and elderly communities across the world. A trusted brand for over 40 years, we strive to provide cutting-edge products that support our mission to alert & notify users through electronic communications
  • 113db extra-loud alarm with adjustable tone & volume control
  • Packaged with our newest most powerful 12 volt bed shaker
  • 5-level dimmer & test function to ensure your clock is setup properly
  • Dual Alarm and equipped with 12/24 hour time capability
  • Built-in red flashing alert lights, and battery backup

Sharp Atomic Desktop Clock with Color Display

by Sharp

Sharp Atomic Desktop Clock with Color Display
  • COLOR ATOMIC DUAL 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 & 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.
  • "NO WORRY" 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.
  • VARIABLE BACKLIGHT ON DEMAND - Press the snooze button on top of the clock to activate the 3-Step Dimmer Control, illuminating the whole display for 5 seconds. The backlight will also illuminate when the alarm sounds.

DreamSky Auto Time Set Alarm Clock with Snooze & Full

DS305 by DreamSky

  • Color: Black
  • Weight: 0.57 pounds
  • Warranty: 1 year warranty.
DreamSky Auto Time Set Alarm Clock with Snooze & Full
  • Elegant 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.
  • 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.

La Crosse Technology 617-1485B Atomic Color Alarm Clock with USB

617-1485B by La Crosse Technology

  • Color: Black
  • Weight: 0.65 pounds
  • Dimensions: 5.6 x 2.2 x 3.3 inches
La Crosse Technology 617-1485B Atomic Color Alarm Clock with USB
  • 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

Sharp Digital Alarm with AccuSet – 💲 Best Budget Atomic Alarm Clock

by Sharp

  • Color: Black-red Led
Sharp Digital Alarm with AccuSet
  • 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.

DreamSky Auto Set Digital Alarm Clock with USB Charging Port

8541847857 by DreamSky

  • Color: Black
DreamSky Auto Set Digital Alarm Clock with USB Charging Port
  • 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.

Emerson SmartSet Alarm Clock Radio with Bluetooth Speaker – 👑 Premium Pick

ER100301 by Emerson Radio

  • Release date: 10/01/2017
  • Color: Black
  • Weight: 1 pounds
  • Dimensions: 6.2 x 3.5 x 2.1 inches
  • Warranty: N. A.
Emerson SmartSet Alarm Clock Radio with Bluetooth Speaker
  • Bluetooth V4.1
  • USB output for mobile charging 2.1a 5V.Button cell battery (included) maintains time & alarm settings
  • Digital Tuning FM radio, 20 station memories. Patented smartest automatic time setting system. Automatically sets itself to the correct year, month, date, day and time as soon as you plug it in and after every power interruption
  • Easy-to-read, 1.4” Cyan LED clock display, dimmer control. Easy to program.The soft blue night light is added convenience.
  • The alarm can be programmed to operate on weekdays only, weekends only, or all seven days of the week. Set the alarm to wake you to your favorite FM music or news station, or to the buzzer.

Marathon Atomic Travel Alarm Clock with Auto Back Light Feature

CL030036BK by Marathon

  • Color: Black
  • Weight: 0.2 pounds
  • Dimensions: 2.8 x 3.2 x 3.2 inches
  • Warranty: 2 year warranty.
Marathon Atomic Travel Alarm Clock with Auto Back Light Feature
  • SELF SETTING: Multifunction display is self-setting and self-adjusting
  • MULTIPLE TIME ZONES: You can easily switch between 6 time zones (Pacific, Mountain, Central, Eastern, Atlantic & Newfoundland)
  • MULTIPLE LANGUAGES: Choose from 5 languages (English, French, German, Italian & Spanish)
  • AUTOMATIC BACKLIGHT: Uses a built in light sensor to detect if the clock has been placed in a dark environment, the backlight can also be manually operated; DISPLAY: Acrylic display is durable for cleaning
  • COMPACT SIZE: Measuring in at 3.25" x 0.5" x 2.75", our atomic clock is great for travel

DreamSky Auto Set Alarm Clock with USB Charging Ports

DS318 by DreamSky

  • Color: Black
  • Warranty: 1 year warranty from purchase date.
DreamSky Auto Set Alarm Clock with USB Charging Ports
  • Self-Setting Alarm Clocks with Auto DST: plug in the clock and it sets itself, no need to set time manually. Time automatically changes for Daylight Saving Time, no reset hassle. Eight time zones optional: EST/ CST/ MST/ PST/AST/HAT/AKT.
  • Large Clear Display with Temperature & Humidity: the 6.6 inches large screen displays the clock time, day of the week, date, time zone & moon phases, which is easy to read at any angle. The Swiss high precision SHTC3 humidity gauge and temperature sensor assist you to maintain an accurate indoor air quality for your family.
  • 6 Level Brightness Plus Auto Dim Mode: 6 level adjustable brightness plus auto dimmer allow you to dim the clock display to a comfortable level on your preference. No glaring light at night but bright enough to read time.
  • Bedside digital Alarm Clock with USB Charging Port: alarm goes off with ascending beeping frequency, which lasts for 2 minutes. No jarred awake nor blaring sounds. The snooze feature allows you to catch more sleep. An extra USB port serves as a charging station for your cellphone etc.
  • Outlet powered desk clocks with Battery Backup: clock is adapter powered and 3 *AA backup batteries (not included) will keep the clock running and trigger the alarm in the case of power cut. No need to worry about oversleep.

La Crosse Technology 617-249 1.8 Inch Curved Blue LED Atomic

617-249 by La Crosse Technology

  • Color: Blue
  • Weight: 0.68 pounds
  • Dimensions: 6.6 x 1.6 x 3.5 inches
La Crosse Technology 617-249 1.8 Inch Curved Blue LED Atomic
  • 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

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