Amazon.com: Garmin vivofit jr. 3, Fitness Tracker for Kids, Includes Interactive App Experience, Swim-Friendly, Up To 1-year Battery Life, Blue Stars : Sports & Outdoors
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
Garmin Vivofit 4, First Take: Great battery life, but no heart-rate monitoring | ZDNET
Amazon.com: HQRP 4-Pack Coin Battery for Garmin Vivofit, Vívofit-3 Bluetooth Fitness Band 010-01225-08 : Electronics
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
How to Change Garmin Vivofit 4 Battery (and Hack Capacity to Make Longer-Lasting)! - YouTube
Coin Battery for Garmin Vivofit Fitness Band 010-01225-08 (3,4,5,10-Pack) | eBay