p>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 youll find valuable insights about your health that will empower you to take action . improve yourself and reach your goals.* *Water resistant to 50M. One Size . Small and Large Bands included. Fitbit Charge 3 . Fitness Activity Tracker: