With the Fitbit Charge HR you'll get the power of your heart rate on your wrist with continuous, automatic, wrist-based heart rate and activity tracking. Monitor your heart rate 24/7 to maximize workouts, manage intensity, and gauge calorie burn. Track steps, distance, floors climbed, and calories burned. Automatically monitor sleep quality and get the option to set a silent alarm. Syncs automatically with mobile devices. LCD screen. Battery life up to 5 days. Includes charging cable. Water-resistant.