For repairs and replacements, you need a serial number.
Find your serial number
In your watch settings
- Press and hold the top button scroll down tap Settings .
- Tap System About.
- Swipe down to find your serial numbers.
On your physical watch
- Remove the band from the top bar.
- Find the serial numbers etched inside the top band bar.
In the Ace app
- Open the Fitbit Ace app .
- On your child’s card, tap Settings Tap Device.
- The serial number will be listed at the bottom of the list. Tapping on the number will immediately copy it.