vívofit Owner's Manual - Replacing the vívofit Device Batteries
5-Year Warranty CELEWELL CR1632 Battery Lithium 3v for Garmin Vivofit Jr Key Fob Replacement (5 Pack) 5 Count (Pack of 1)
Buyr.com | Activity & Fitness Trackers | Garmin vivofit jr. 3, Fitness Tracker for Kids, Includes Interactive App Experience, Swim-Friendly, Up To 1-year Battery Life, Blue Stars