• Ace 3 helps kids develop healthy habits by encouraging them to get active and get the sleep their growing bodies need.The device helps motivate kids to get moving to reach the 60 daily active minutes with reminders to take at least 250 steps per hour, with an option to customise during school time.

Fitbit Ace 3 Activity Tracker

Fitbit Ace 3 Activity Tracker
Product Code: 9-FB419BKBUAce 3
Barcode/EAN: 810038853093
Fitbit Ace 3 Activity Tracker (Cosmic Blue)
Product Code: 79-FB419BKBUAce 3
Barcode/EAN: 810038853093
Fitbit Ace 3 Activity Tracker (Jet Black/Sports Red)
Product Code: 79-FB419BKRDAce 3
Barcode/EAN: 810038854632


  • Sleep Tracking 
  • Bedtime Reminders and Alarms 


  • Water Resistant to 50m 
  • Reminders to Move 
  • All-Day Activity Tracking 


  • Fitbit App Parent View 
  • Fitbit App Kid View 
  • Wireless Sync 
  • Call Alerts 
  • Up to 8 Days of Battery 
  • Fun Incentives 
  • Timer & Stopwatch 
  • Stats on Your Wrist 


  • Comfy & Secure 
  • Clock Faces 
  • Bands & Accessories 
  • Streamlined Design & Touchscreen 
What's included:
Fitbit Ace 3
Classic wristband (one size)
Charging cable
Sensors & Components
3-axis accelerometer
Vibration motor
Ace 3 includes sensors for heart rate tracking; they are deactivated and cannot be turned on
PMOLED Display
Battery and Power
Ace 3 has 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 4.2
Saves 7 days of detailed motion data – minute by minute
Saves daily totals for the last 30 days
Water Resistance
Ace 3 is water-resistant to 50 metres. 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 and tablets. 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 and tablets 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, iPad 5 gen. and later, Android 7.0 and later.
Band Size
Print this guide to make sure this tracker is the right fit for your child.
One size: Fits wrist 116 mm - 168 mm in circumference
Device Dimensions
37.39mm l x 16.8mm w x 12.9mm h