Fitbit Ace 3 User Manual Change the band
Ace 3 comes with a kid's band attached. The band can be swapped with accessory bands, sold separately on fitbit.com. For band measurements, see "Band size". Note that for larger sizes or different styles, Ace 3 is compatible with Inspire 2 classic accessory bands.
Remove a band
- Hold the tracker with the screen facing you. 
- Gently push the top of the tracker through the back opening in the band.  
Attach a new band
- Hold the tracker with the back facing you. Make sure the time isn't upside down. 
- Hold the band with the back opening facing you and the strap buckle on the top. 
- Place the top of the tracker into the flexible band opening and gently push the bottom of the tracker into place. Ace 3 is secure when all edges of the band lie flat against the tracker.  
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