Fitbit Ace 3 Blue Green
Fitbit Ace 3 Blue Green
Fitbit Ace 3 Blue Green
Fitbit Ace 3 Blue Green
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  • Load image into Gallery viewer, Fitbit Ace 3 Blue Green
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Fitbit Ace 3 Blue Green

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Sleep Tracking 

Ace 3 lets you know if kids are getting the rest they need since good sleep habits play a big role in their health and well-being.

Bedtime Reminders and Alarms 

Use the Fitbit app to schedule bedtime reminders and silent alarms that gently wake kids with quiet buzzing on their wrists.


Since Ace 3 is water resistant to 50m, spills and splashes don’t stand a chance and kids can wear it in the pool and ocean.

Reminders to Move 

In the app, parents can set friendly on-wrist reminders for kids to move & stretch their legs if they’ve been sitting still for too long.

All-Day Activity Tracking 

Ace 3 tracks all-day steps, and Active Minutes show how every move, skip and jump adds up to a healthier, more active life.

Fitbit App Parent View 

Parents set up a family account and create child accounts. In Parent View, they can easily see kids’ activity and approve their connections.

Fitbit App Kid View 

Parents have the option to set up accounts for their kids and enable Kid View, where kids 6+ can see their stats, badges and clock faces.

Wireless Sync 

Ace 3 connects to 200+ Android & iOS devices so parents can get a full picture of kids' health and wellness.


Kids who own a smartphone will love getting notifications on their wrists—and parents will love how much easier it is to get in touch. Works with select devices when phone is nearby.

Up to 8 Days of Battery 

With up to 8 days of battery, Ace 3 lets kids spend less time charging and more time moving.

Fun Incentives 

With virtual badges, animated clock faces and personalised avatars, kids have motivation to get moving with the family and find ways to best their buds.

Timer & Stopwatch 

Use timer & stopwatch features right on kids’ wrists to guide homework time, any “race you to the end of the block” invitations and more.

Stats on Your Wrist 

Kids can see their key activity stats for the day right on their wrist, helping them stay in the know while they’re on the go.

Comfy & Secure 

Designed with kids in mind, Ace 3 was built for up, down, all-around action with a comfortable silicone band and secure, adjustable clasp.

Clock Faces 

Kids can choose from fun clock faces right on their wrist—a rocket, a bunny, Minions and more—that animate as they make progress toward their goals.

Bands and Accessories 

Kids can express their unique style by switching out their band with interchangeable accessories like mischievous Minions bands. Sold separately.

Streamlined Design & Touchscreen 

With a sleek, streamlined design and backlit display, it’s easy for kids to navigate and see stats.

Sensors & Components

  • 3-axis accelerometer
  • Vibration motor
  • Ace 3 includes sensors for heart rate tracking; they are deactivated and cannot be turned on


  • Touchscreen
  • PMOLED Display

Battery and Power

  • Ace 3 has up to 8 days of battery. Battery life and charge cycles vary with use, settings and other factors; actual results will vary. We recommend charging your tracker every few days to ensure you are always tracking.
  • Battery type: Lithium-polymer
  • Charge time (0-100%): Two hours
  • Radio transceiver: Bluetooth 


  • Saves 7 days of detailed motion data – minute by minute
  • Saves daily totals for the last 30 days

Water Resistance

  • Ace 3 is swimproof, meaning it's water resistant to 50 meters. After kids go swimming or get the band wet, take the tracker off and dry the band off in order to keep the band clean and dry. See here for more details.

  • The Ace 3 band is made of a flexible silicone similar to that used in many sport watches and includes a plastic buckle. Learn more about wear and care tips here.

Environmental Requirements: Operating temperature: -10° to 45° C

Maximum operating altitude: 8,535 m


  • The Fitbit app is compatible with most popular phones. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running one of the following operating systems:
  • Apple iOS 12.2 or higher.
  • Android OS 7.0 or higher. See additional tips for Android phones here.
  • Syncing range: Up to 9m
  • Certain features like smartphone notifications may require Android 7.0+. Check your device compatibility.
  • Syncing requires Bluetooth LE and Internet connection.
  • Syncs with Mac OS X 12.2 and up, iPhone 5S and later, Android 7.0 and later.
Band Size
  • One size: Fits wrist 116 mm - 168 mm in circumference
  • Device Dimensions: 37.39mm l x 16.8mm w x 12.
What's included:
  • Fitbit Ace 3
  • Classic wristband (one size)
  • Charging cable