vívofit Owner's Manual - Replacing the vívofit Device Batteries
vívofit 2 Owner's Manual - Getting Started
Garmin Vivofit jr 2 teardown - YouTube
Amazon.com: Garmin vívofit 4 activity tracker with 1+ year battery life and color display. Small/Medium, Black. 010-01847-00, 0.61 inches : Sports & Outdoors
Replacing the Batteries
How to replace a Garmin vivofit Jr 2 Battery - YouTube
Macrotots: Garmin Vivofit 2M Steps and Battery Change
Support: vívofit jr. 2 Battery Replacement and Software Update - YouTube
Tutorial - vívofit jr. 3 Battery Replacement - YouTube
Support: Battery Replacement on a vívofit® jr. 2 - YouTube