Fitbit Ace 3 Specifications

Fitbit Ace 3 Specifications

The Fitbit Ace 3 is the newest kids’ fitness tracker offered by the popular manufacturer. This device offers a range of features that are unmatched in this price range.

The new Fitbit Ace 3 is a sleek, lightweight fitness tracker that the company designed for users to wear on their wrists. It has many features you’d expect from a Fitbit watch—but they made it specifically for kids.

It features a variety of new technologies and innovations. Let’s have a look at what this fitness device can do.

To learn more about Fitbit Ace 3 specifications, keep reading.

Fitbit Ace 3 Specifications

The Fitbit Ace 2 was an awesome fitness tracker for kids. In fact, it was one of the best of such offerings that you could buy.

However, the latest Fitbit for kids’ entry—the Ace 3—improves on near perfection. It enables you to open up a world of physical activity adventure for your kids. With the Fitbit Ace 3, you can make fitness fun.

The following are the specs for the Fitbit Ace 3:

• 2-hour charge time
• 30 days of daily totals
• 30-foot sync range
• 3-axis accelerometer
• 7-day minute-by-minute motion data
• Dimensions: ~37 mm length x 17 mm width x 13 mm thickness
• Fits wrists from ~122 mm to 173 mm
• Maximum operating altitude 8,535 m
• Operable from -10°C to 45°C
• PMOLED touchscreen display
• Syncs with Mac OS X 12.2+ and Android 7.0+
• Up to 8 days of battery life
• Waterproof to 50 m
• Weight 14 g.

Physical Dimensions of the Fitbit Ace 3

The watch features a one-size-fits-all band. Typically, the band will fit small wrists from about 122 mm to 173 mm. You can also adjust it as needed using the holes in the band.

Fitbit designed the Ace 3 for children ages six and older. The watch will fit smaller children. However, the design of the strap also allows smaller adults to wear the fitness smartwatch.

To encourage kids to get active, the Fitbit Ace 3 comes with different accessory band options. This is a fun and easy way to switch up the look of the tracker to suit their own unique style. 

The Fitbit Ace 3 face measures about 37 mm long. A black-and-white touchscreen takes up about half of that space. Within that space, Fitbit placed a PMOLED display.

Screen Type

The Fitbit Ace 3 is chunkier compared to the previous version. Also, the screen has retained its greyscale colouring. Here’s one of the few areas where other options, such as the Garmin vivofit jr 3, might look more appealing.

The Fitbit Ace 3 works with the Fitbit app. However, it has a kid’s view.

Kids can use this perspective to view their stats. They can also observe their badges and change clock faces.

Meanwhile, parents can use the app to check on their child’s statistics and activities. Both the parent’s and kid’s views are very well-designed and intuitive.


Once again, the Fitbit Ace 3’s improved battery life is its crowning achievement with this year’s model. It’s worth noting that most smart watches with colour screens require daily charging.

With this iteration of the Ace 3, Fitbit added plenty of battery life. Officially, the Fitbit Ace 3 will last for eight days. However, you can squeeze even more life out of the battery with careful usage.

The new extended battery life of the Fitbit Ace 3 is quite impressive. For now, the Fitbit Ace 3 outperforms all its competitors—with the exception of the Garmin vivofit 3 with its extraordinary one-year battery life. Still, you can recharge the Fitbit Ace 3 easily via USB.

General Features

One of the cool features of the Fitbit Ace 3 is its fun, interactive watch faces. For instance, one face features an alien that’s asleep.

It wakes up and smiles when your kids walk around. This is a motivating feature.

The interactive watch face works well for encouraging kids to get up and move about. Likewise, the timer and stopwatch come in handy for races.

Children can also use the Fitbit app to challenge their family members to entertaining step competitions. They can also send each other messages or “cheers” using the Fitbit app.

Kids can also see daily activity stats on their wrists. They can also receive alerts and short text messages on their wrist if they have a smartphone. These features might prove worthy of encouraging older kids to make use of the Fitbit Ace 3.

Fitness Features

Despite its greyscale appearance, the Fitbit Ace 3 face features an interesting touchscreen. It doesn’t come to life with wrist movement like the Fitbit Ace 2.

It has sensors on the sides that allows users to select options. Still, Fitbit Ace 3 users can swipe up and down and cycle through all of the fitness watch’s features.

Unlike most other rivals—with the exception of the Garmin vivofit jr 3—Fitbit Ace 3 users can track their sleep.

Also, parents can use the Fitbit watch to schedule quiet buzzing as a sleep time reminder. This feature is helpful for encouraging kids to maintain a healthy sleep schedule. The fitness watch also includes a gentle morning alarm.

The Fitbit Ace 3 also encourages physical activity by highlighting their children’s accomplishments with virtual badges in the accompanying Fitbit app.

Meanwhile, parents can use the app to give their children reminders to move around. They can also check out activity graphs highlighting their children’s physical and sleep activity.

Activity Sensor

The Fitbit Ace 3 does everything that you’d expect from a fitness tracker. It measures activity and counts steps accurately. With the fitness watch’s sleep monitor, parents can gain an insightful understanding of their children’s sleep patterns.

What It Tracks

The Fitbit Ace 3 makes use of a three-axis accelerometer to track steps. However, it also features sensors for heart rate tracking. For this reason, it can count intense activities such as jumping and skipping in active minutes.

The Fitbit Ace 3 can even track activities such as swimming. The watch is water-resistant up to 50 m.

It also features a water lock. With the Fitbit Ace 3, you’ll never have to worry about spills or splashes.

This fitness watch is great for active kids. You can use it to track up to three activities at a time.

The Rest

Along with its other innovations, this Fitbit model receives high marks. However, it offers a fresh, new look, and it’s packed with new features, such as:

• Bluetooth LE radio transceiver
• Flexible silicone construction
• Heart rate tracking sensor
• Lithium-polymer battery
• Vibration motor


Fitbit also offers the Ace 3 in three entertaining Minions bands. With these branded offerings, kids can have fun with the mischievous Minions. One version is available in Mischief Black. The other option is Despicable Blue. There’s also a special edition Minions Yellow watch.


If your child doesn’t get excited by Minions, no worries. Fitbit also offers the Ace 3 with two classic bands. The first band is Black and Sport Red. The other band is Cosmic Blue and Astro Green.

However, you’re not limited by these options. You can also purchase high-quality aftermarket bands for your child’s Fitbit Ace 3.


The Fitbit Ace 3 case measures about 37 mm x 17 mm x 13 mm. What’s more, it weighs a mere 14 g.


Fitbit’s Ace 3 kids fitness watch cost about AU$107. A classic Fitbit band may cost around AU$25. Meanwhile, a Minions band might cost a little over AU$40.

What Else Should I Know?

Fitbit has added extra battery life and great extra features to its latest version of the Ace 3. With its improved tracking, it’s destined to become the top kids’ smartwatch on the market.

This kids fitness watch packs a feature-filled punch. However, it’s also great looking.

Unlike its competitors, however, Fitbit limited its association with character tie-ins. Its Ace 3 offering will provide more longevity for this reason. It’s even possible that teenagers might take to this kids’ fitness tracker with grown-up features.

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