5 Pack - Battery Replacement for Garmin Vivofit Jr Activity Tracker Watch Junior | eBay
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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
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Replacing the Batteries
Support: Battery Replacement on a vívofit® jr. 2 - YouTube