Amazon.com: Garmin Vivofit 3 Activity Tracker Fitness Band - X-Large Fit - Black (010-01608-04) with Xtreme Fusion Bluetooth Headphones Black/Red, 2600mAh Keychain Power Bank &Neoprene Pouch : Electronics
Garmin Vivofit 3 is a fitness tracker with year long battery life
vívofit Owner's Manual - Replacing the vívofit Device Batteries