Fitbit Charge 3 Fitness Activity Tracker Graphite/Black One Size (S & L Bands)

Get a deeper understanding of your body, your health and your progress with Fitbit Charge 3. This swim proof advanced fitness tracker does more than count steps it tracks 24/7 heart rate, calorie burn, 15+ exercises, goal progress, sleep and more. Every day, you'll find valuable insights about your health that will empower you to take action, improve yourself and reach your goals. Compatiblity: Syncs with iOS 10 and later, Android 5.0 and later and Windows 10 devices. Windows coming soon. Small wristband Fits a wrist between 5.5 7.1 inches. Large wristband Fits a wrist between 7.1 8.7 inches.