5 Best Atomic Alarm Clocks in 2022 - Satellite Alarm Clocks

Updated: March 15, 2022

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You may not notice it, but even the most expensive clocks are going to lose time. It may only be one second every 24 hours; however, that's still time lost at the end of the day. Unless, of course, you decide to invest in an atomic clock.

Rather than needing to be set up manually, atomic clocks are programmed to pick up a specific radio station frequency. This frequency is then decoded and automatically allows the clock to set the time.

Therefore, it's always going to project the right time.

The purpose of this article is to review the five best atomic alarm clocks. By the time you've finished reading, you'll better understand which clock is best for you.

However, I first want to highlight my top pick. Out of the five alarm clocks in this article, I recommend the Marathon Atomic Desk Clock. It's sturdy, simple, and doesn't have a backlight that disrupts your sleep during the night.

Why I'm Qualified

I used to have difficulty waking up because of bad alarm clocks. So, I spent a number of years learning about which ones are worth your money. During this time, I also learned about the best atomic alarm clocks.

In addition, I also developed an alarm clock online.

Best Atomic Alarm Clocks

Marathon CL030054BL Atomic Desk Clock

Best for the Bedroom

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When it comes to choosing an atomic alarm clock, you need something that's easy to read, accurate, and designed to last a long time. I'm happy to say that the Marathon Atomic Desk Clock excels in all these areas.

I find it great as a bedside alarm clock because it doesn't have a bright LED screen keeping you awake all night. The LED screen shuts off in the dark, allowing you to sleep peacefully and without distractions.

With that being said, there is a built-in backlight that can be activated by pressing the button on top. Pressing this button causes the clock to illuminate orange for five seconds before turning it off.

The light won't wake you up from sleep; however, it's bright enough that you can briefly check the time.

This brings me to my next point.

The numbers on this clock are large enough to see from across the room, even for people with slight vision impairment.

For downsides, I found it's a little difficult to set up. Although it comes with instructions, they don't explain things in a clear manner.


  • Super accurate and displays atomic signal strength
  • Built-in amber backlight that activates for 5 seconds
  • Amber backlight isn't super bright
  • Large and easy to read display screen
  • A larger design helps prevent it from falling over


  • Difficult to set up
  • The instructions aren't written clearly

Best Feature: Dark LED screen at night

AcuRite 13024 Atomic Dual Alarm Clock

Best for Couples

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While the Marathon Atomic Alarm Clock is more than enough, the Acurite Alarm Clock is a little more complex. Rather than one, you can set two separate alarms for weekdays and weekends.

Because who wants to wake up at 6 AM on the weekend, right!?

Furthermore, you can adjust the alarm volume. I like this feature because it caters to heavy sleepers. Most alarm clock companies take a one size fits all approach when it comes to creating alarm clocks.

However, what works for one person may not work for another.

If you decide to purchase this clock, there's something you need to be aware of. Every day at midnight, it automatically resets. When this happens, it's nothing to worry about. All your settings will be saved, and you won't need to do anything.

What's more, the large screen displays your next alarm, which I really like. However, the LED screen is difficult to read unless you are face level with it.


  • Dual alarms for weekdays and weekends
  • Adjustable alarm noise levels make it great for heavy sleepers
  • Large display screen
  • You can easily see the time for your next alarm
  • Acts as a power bank to charge your phone


  • Automatically resets and updates at midnight (your settings will be saved)
  • The LED screen can be difficult to see from certain angles

Best Feature: Adjustable alarm volume

Sharp Atomic Desktop Clock

Best for Young Adults

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When you first look at the Sharp Atomic Desktop Clock, you notice just how sleek and modern-looking it is. That's why I recommend it for teenagers, young adults, and people who prefer a modern theme throughout their homes.

While the large display screen is easy to read straight on, it isn't easy to see from certain angles. This means you need to put it somewhere that's eye level. Otherwise, it's too dim.

Now we've cleared up that slight error, let's talk about the positives.

The first thing that stood out to me was how simple this clock is. Rather than having multiple functions such as temperature and humidity taking up the screen, it only displays the time and date.

You can choose between three brightness levels. The highest setting is bright enough to read a book before bed, whereas the lowest setting is a slight glow.

While the brightness settings are adjustable, the same can't be said about the alarm volume. It's loud enough to wake up most ordinary people; however, I wouldn't recommend it for heavy sleepers.


  • Modern design looks great in most homes
  • Large letters, numbers, and display screen
  • Simple design with only time and date
  • Multiple levels of brightness (backlight)
  • Easy to set up


  • You can't see the display screen from certain angles
  • The alarm volume isn't adjustable

Best Feature: Multiple brightness levels

La Crosse Technology 308-1414B-INT

Best for Weather Monitoring

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If you're looking for something that provides everything like the temperature, date, and humidity - this is the one for you!

The weather alarm clock isn't as loud as I'd like; however, it gets the job done for most people.

What's more, you'll notice the bulk of the display screen is taken up by the indoor and outdoor temperature icons. As somebody who is only interested in the time, I'd like to see it take priority over the temperature in future models.

Furthermore, it can be screwed into the wall. I like this feature because it gives you more options than clogging up your bedside cabinet. Although, there is also a back stand which may be more suitable for some people.

You'll also be glad to hear it can be operated using either batteries or a power outlet. I recommend using the power outlet while also installing batteries in case of a power outage.

For downsides, I found some people were getting inaccurate temperature readings. However, this could have happened because of where they installed the temperature sensor.


  • Displays the time, date, temperature, and more
  • Loud enough for most people (not heavy sleepers)
  • Large display screen
  • It can be mounted onto the wall
  • Battery backup in case of a power outage


  • The temperature readings can e inaccurate if the sensor isn't installed in the right place
  • The display screen looks a little cluttered

Best Feature: Additional features (temperature, date, humidity, etc.)

Sangean RCR-22 Atomic Clock

Best for Sound Enthusiasts

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If you want an alarm clock with a more vintage-looking design, the Sangean RCR-22 Atomic Clock is perfect. The great thing about this alarm clock is that it stands on four legs, making it near impossible to knock over accidentally.

Feel free to connect it to a speaker using an AUX cord. While not everybody has a speaker lying around the house, it's a great perk for heavy sleepers who find it hard to wake to quieter alarms.

There's also a nap alarm. This lets you set a short alarm in 5-minute increments with a maximum time of two hours, so you can easily get some shut-eye during the day.

Furthermore, it has a number of other uses. For example, you can access FM and AM radio stations. You can also use a specific radio station as your alarm in the morning.

So how about downsides!?

As there are many features to get used to, setting it up can be a little overwhelming at first; however, there is an easy-to-follow instruction manual that guides you step by step through the process.

Also, when the backlight is dimmed, it isn't easy to see the time.


  • Vintage design
  • The sturdy design makes it difficult to knock over
  • Use a speaker for your alarm (great for heavy sleepers)
  • The option to use a nap alarm
  • Can access FM and AM radio stations


  • The setup process can be a little overwhelming
  • When the backlight is fully dimmed, it's hard to see the time

Best Feature: Can access the radio

Choosing the Best Atomic Alarm Clock


One of the most important things to consider when getting an atomic alarm clock is accuracy. The whole purpose of atomic clocks is that they do a great job at keeping the correct time.

The reason an atomic clock wouldn't keep the right time is that the signal isn't strong enough. You can prevent this from happening by changing the location of the clock until you find the ideal spot.

What's more, some atomic clocks have a signal bar on the display screen, similar to the 4G signal strength icon on mobile phones. You can use this feature to determine the best place to put the clock.


Regardless of whether your clock is atomic or not, it's important to choose one with a large display screen. That way, you can see the time from across the room. Not only that, but it's better for people who are visually impaired.

You should also take note of the number of icons on the display screen. Although the screen itself may be big, if it's covered in different icons, the time may still be hard to see.

If visibility is your main concern, stick with something that only displays the time and date rather than other features such as temperature and humidity.

Time zone

Before purchasing an atomic alarm clock, you need to make sure it supports your specific time zone. This information can be found on the product page.

The last thing you want is to purchase an atomic clock that doesn't support your time zone, right!?

Additional features

Some atomic alarm clocks have additional features, such as an indoor and outdoor temperature display. While these are great features to have, they take up space on the display screen, making the time a little harder to read.

Final Verdict

Atomic alarm clocks are the most reliable on the market. If there's one thing you can guarantee, it's an accurate time reading. And an accurate measurement of time equals an accurate alarm.

So no more being late to work or college!

However, some atomic alarm clocks are better than others. My top pick is the Marathon Atomic Desk Clock. It's compact, durable, and has an easy-to-read display screen. That being said, the best atomic alarm clock that supports the most time zones is the one that supports six time zones.

Author: Burak Özdemir

My name is Burak, and I used to have difficulties waking up in the morning due to unreliable alarm clocks. Over the past few years, I've dedicated part of my life to finding the best alarm clocks and sharing my knowledge with people through this blog.