Keeping Up The Sleep Schedule With The 5 Best Atomic Alarm Clocks In 2021

Best Atomic Alarm Clocks

Have you ever witnessed a situation where you thought the time on your smartphone or any other device is correct, but it turns out that the time was wrong? I have, and it was not funny because it made me miss an important exam.  So the question now is; how do we combat this problem of inaccuracy in some of our timepieces?

The solution is owning an atomic clock. Although smartphones and other devices can be used to determine the current time, traditional atomic clocks offer accuracy, as well as enhanced functionality and style to an office or a home. They are designed to measure the precise length of a second, making them more dependable than any other type of clocks. Even when there is a power outage, an atomic clock would automatically adjust itself accurately.

Quick Look At Our Top 5 Picks In 2021

Image Product Features

Most Popular

DreamSky Digital Alarm Clock
  • Loud alarm with a snooze
  • It produces quality sound
  • It is affordable
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Budget Option

Travelwey Digital Alarm clock
  • It has a big bright light
  • It comes with a battery backup
  • It has a snooze button
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Best Luxury

AcuRite Intelli-Time Alarm Clock
  • The brightness can be easily adjusted
  • It comes with a USB port
  • It helps monitor the temperature and humidity of your room
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Best Vibrating Model

Sonic Bomb Alarm Clock
  • Deafening alarm
  • It has a vibrating alarm that can be used by the deaf
  • Dual alarm system
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Best Nightlight Model

PEAKEEP Large Digital Alarm Clock
  • It is quite affordable
  • It has multiple functions
  • Its controls are easy to use
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When traveling to a different time zone, having an atomic alarm clock would be of enormous help. These clocks are easy to set and can pick up radio signals from atomic time transmitters automatically to maintain accuracy regardless of your location. Let us look at the five (5) best atomic alarm clocks in 2021, as well as essential tips for choosing the ideal model that can satisfy your needs.

Most Popular: DreamSky Digital Alarm Clock

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The DreamSky Digital Alarm Clock allows for an extra USB port that will enable you to charge your smartphone, iPad, or other portable devices without plugging into a wall socket. Also, it comes with a digital FM Radio and sleep timer, which allows you to fall asleep while your favorite stations play for a specified amount of time. 

The alarm clock also comes along with a headphone jack that allows you to listen to music in private. Its sizeable LED screen makes it possible to read the time from a distance. It uses two AAA batteries. 


  • Loud alarm with a snooze.
  • It produces quality sound.
  • It is affordable.
  • Simple to use.
  • It comes with an FM radio.
  • Built-in headphone jack.


  • It requires more than one battery.
  • It may be too loud for some people.

Budget Option: Travelwey Digital Alarm clock

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This particular alarm clock is very much straightforward to operate for everyone, including kids. It features a big nightlight that can be activated by a simple press of a button on top of the device. The volume can be adjusted to either high or low levels, depending on how you want it. 

You can also alter the brightness of the nightlight, as well as the time display, to a suitable level to ensure that it does not disturb your sleep. The size of the device does not take up much space on the bedside table or even the nightstand. Again, the alarm clock comes with a backup battery compartment in case you have a power outage, which most models do not have. The face of the alarm clock boasts a large LCD that makes the numbers easy to read, even for visually impaired individuals. 


  • It has a big bright light.
  • It comes with a battery backup. 
  • It has a snooze button.
  • Very much portable.
  • Adjustable brightness and volume.


  • It has only one alarm sound.
  • It may not be classy enough for some people.

Best Luxury: AcuRite Intelli-Time Alarm Clock

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This type of atomic alarm clock is perfect for people who want a simple and reliable alarm clock. It has an integrated USB port, which allows you to charge your smartphone while you sleep. It equally has an illuminated color display with auto-dimming brightness. 

It is electric-powered with an optional backup battery, which allows it to still function when there is a power failure. This alarm clock wakes you up peacefully and on time as the sound produced gradually increases in volume over a two-minute timespan. It also monitors the indoor temperature and humidity of your room right from your nightstand. You would love the fact that it adjusts for daylight saving time and automatically sets itself after a power failure. It also comes with a bold display that enhances the legibility of the current time from across the room.  


  • The brightness can be easily adjusted.
  • It comes with a USB port.
  • It helps monitor the temperature and humidity of your room. 
  • Huge display for an easy read.
  • The alarm volume can be adjusted conveniently.


  • Alarm volume can be very high for some people.
  • The backup battery cannot power the alarm.

Best Vibrating Model: Sonic Bomb Alarm Clock

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This product is one of the most popular atomic alarm clocks in the market today. It is designed to wake you up in three different ways with sound, flashing lights, and vibrations. The good thing is that these features can be enabled independently. You can also set them in a variety of combinations or even turn all of them off except for the flashing red lights. 

Again, the clock has dual alarms. That way, both you and your lover or roommate can have different wake-up times. It also uses a 9V battery and is available in different colors. 


  • Deafening alarm.
  • It has a vibrating alarm that can be used by the deaf.
  • Dual alarm system.
  • It offers multiple alert options.
  • The alerts can be customized.


  • The alarm may not go off on battery power.
  • Could be too loud for some sleepers.

Best Nightlight Model: PEAKEEP Large Digital Alarm Clock

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This atomic alarm clock comes with multiple functions. The LED numbers are large, with a dimmer that can reduce the intensity of light from the display. You get to read the time easily without needing spectacles. It has a non-disturbing night light, which is located at the back and can be easily turned on or off via the big easy-to-reach top button. 

The alarm clock also has beeping, which can be set in low or high volume and capable of continuing for up to 120 seconds. It is equally loud enough for heavy sleepers. It also has a USB charger located at the back that provides adequate power for charging your smart devices.


  • It is quite affordable.
  • It has multiple functions.
  • Its controls are easy to use.
  • The alarm can easily be turned on or off with ease.


  • It has only one alarm sound.
  • Its backup battery cannot power the alarm.

Key Considerations When Choosing An Atomic Alarm Clock

Design: There are Cesium atomic clocks and radio-controlled models. The Cesium units feature a quartz oscillator, which resonates at a specific frequency to maintain time accuracy. For radio-controlled models, they synchronize to a wireless signal, which ensures that the clock is corrected periodically.

Accuracy level: This should be the first factor you should consider. It is better to go for a radio-controlled atomic alarm clock because it can synchronize the nationwide time data. It is also essential to make sure that the design and features do not affect its time readings. The best atomic alarm clocks are accurate regardless of your location, and the signals are never too weak. 

Display: There are usually two options when you want to buy an atomic alarm clock. These options are analog and digitized screens. The analog models are very much popular because of their affordability. But those with digitized screens come with benefits, like prominent characters which allow you to read the time conveniently, whether at night or during the day.

Extra Features: When you want to get an atomic alarm clock, it is always important to consider if it supports time zones. The design of atomic alarm clocks does not support all time zones. The transmitted information from the central signal radio station is often displayed in a different format. It is crucial to make sure that it works in a reliable format for your time zone.

Price: This is equally one of the factors that you should consider when purchasing an alarm clock. It is essential always to have a budget when making any acquisition. Endeavor to get something that you can afford. 

Frequently Asked Questions (FAQs)

How does an atomic alarm clock work?

An atomic alarm clock exists to solve the problem of time accuracy. If you look at all the alarm clocks that we have discussed, you will notice that all of them have FM radio installed. The presence of this helps the alarm clock to pick up radio signals from atomic time transmitters. The clock becomes capable of adjusting the time automatically, regardless of your geographic location. 

What are the things I should consider to find the best atomic alarm clock?

Aside from design, there are other factors that you should consider if you want to get an excellent atomic alarm clock. First, you should decide if you wish to get something digital or analog. And if you prefer analog, then you should go ahead and consider how much noise you can tolerate. 

The ticking sounds of a clock can either be soothing or annoying. It all depends on the effect it has on you. It is equally important to consider the battery life of the alarm clocks. This way, it reduces the number of times you need to shut down the device to replace the batteries.

Why are atomic alarm clocks considered the best?

Well, it is quite apparent. Atomic alarm clocks are considered the best because of their accuracy in keeping time and how quick they are to adjust if you go to a new region with a different time zone. Hence, they are the best alarm clocks to get if you are always traveling.

How long does it take for an atomic clock to set?

You would expect a radio-controlled clock to miss the first time signal when it comes on. So, it usually takes about one minute to set itself (sometimes 5 minutes or even longer), depending on the signal quality and the receiver design.

Does an atomic clock set itself?

All that you have to do is set the time zone, and the clock can display a very accurate time. There are GPS receivers that synchronize with atomic clocks in orbiting satellites. These devices are as precise as the traditional atomic clock.

Final Thoughts

Since the invention of these atomic alarm clocks, they have been beneficial, as they are known to be very accurate with extra features, unlike other traditional models. These additional features allow you to see essential data, like temperature and humidity. But it is imperative that you buy a device that supports your time zone.

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