Keep track of all your fitness goals with the Fitbit Charge 3 Advanced Fitness Tracker. This swimproof fitness tracker and watch uses 24/7 heart rate to track calorie burn, optimize workouts, improve sleep and uncover health trends that inspire you. Keep track of your fitness goals and develop a deeper understanding of your body, your health and your progress Swimproof advanced fitness tracker and watch Water resistant to 50 meter Tracks 24/7 heart rate, calorie burn, 15+ exercises, goal progress, sleep and more to uncover valuable insights about your health and fitness and empower you to take action toward your goals Wear all day and night to record and reveal your resting heart rate, track heart rate trends over time, and follow your health and fitness progress Automatically recognizes exercises like runs, swims, elliptical, sports and more and records them for you in the Fitbit app Helps you find moments of calm throughout your day with personalized guided breathing sessions based on your heart rate Shows you how much time you spend in Light, Deep and REM sleep stages and reveals insights on your night that can help you improve sleep quality Offers period tracking and predicted ovulation dates for female wearers Stay connected on the move with call and calendar alerts, text notifications and quick replies, plus updates from everyday apps (available when your phone is nearby) Quick replies for Android only Large touchscreen with backlit display that automatically adjusts to lighting conditions for ease of view Automatically syncs to computers and 200+ Android, iOS and Windows devices Up to 7 days of battery life