Fitbit Ace™

Activity Tracker for Kids 8+

Activity Tracking

Tracks your child's daily steps and active minutes.

Rewards & Badges

Acknowledges goals and milestones with fun celebration messages and badges.

Set Activity Goals

With customizable step and active minute goals, Ace gets kids moving and makes it fun!

Step Challenges

Kids can stay motivated by challenging others to step competitions in the Fitbit app.


From puddle jumping to lunchtime spills, Ace can handle whatever your kid gets into.

Battery Life

Battery life up to 5 days so kids can spend less time charging and more time moving.*

Sleep Tracking

Ace tracks your child’s sleep duration, sheds light on their ZZZ’s and encourages good bedtime habits.

Fitbit App: Parent View

Parents set up a family account and then create an account for their child where they can view activity and progress.

Fitbit App: Kid View

Kids can see stats or badges and change their clock faces in the app through a secure Kid View that can be turned on and off from the family account.

Clock Faces

With 10 fun clock face designs that show the date, time, goal progress and more, kids can choose their favorite style.


Kids who own a smartphone can receive call notifications on their wrist. Works with select devices, when phone is nearby.

Reminders to Move

Turn on Reminders to Move notifications for friendly on-screen messages that encourage kids to stay active all day.

Track Progress

Ace automatically syncs to iOS & Android devices so you can track your child’s activity trends over time and see how small steps make a big impact!

*Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. Smartphone notifications unavailable on Windows devices.

Print this guide to visualize the size.

One Size

Fits wrists 4.68" - 6.10" in circumference

Width .61"

What's Included

  • Fitbit Ace tracker
  • Ace classic wristband
  • Charging cable

Sensors & Components

  • 3-axis accelerometer
  • Vibration motor


  • OLED tap display

Battery and Power

We recommend charging Ace every few days to ensure you are always tracking. Avoid using third-party chargers.

  • Battery life up to 5 days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary.
  • Battery type: Lithium-polymer
  • Charge time: One to two hours
  • Radio transceiver: Bluetooth 4.0


  • Saves 7 days of detailed motion data – minute by minute.
  • Saves daily totals for past 30 days

Water Resistance

Ace is rain, sweat and showerproof (IPX7), but not swimproof. Make sure to rinse and dry Ace after kids shower in it—it’s best for their skin if the band stays dry and clean.


If your child gets Ace wet or sweats in it, remove and completely dry the band before they put it back on. Make sure kids take the band off every now and then and regularly clean the band and the wrist area around it with water. Do NOT use hand soap, body soap, dish soap, hand sanitizers, cleaning wipes or household cleaners, which could get trapped beneath the band and irritate skin. Kids with eczema or a skin condition should talk to a doctor before wearing. Learn more.


The Fitbit Ace wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. The Ace tracker and clasp are made with surgical-grade stainless steel.

Environmental Requirements

  • Operating temperature: 14° to 113° F
  • Maximum operating altitude: 30,000 feet

Syncing & Notifications

Using Bluetooth LE wireless technology, Fitbit Ace syncs automatically to iOS and Android™ mobile devices. Certain features may require Android 5.0+. Look up your device to check compatibility.

  • Syncing range: Up to 30 feet
  • Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later and Android 4.3 and later.

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