Get continuous?? automatic?? wrist-based heart rate and?simplified heart rate zones</br>Track workouts?? heart rate?? distance?? calories burned?? floors climbed?? active minutes and steps</br>Monitor your sleep automatically and wake with a silent alarm</br>See call notifications?? daily stats and time of day on the OLED display</br>Sync stats wirelessly and automatically to your computer and over 150 leading smartphonesKindly contact Fitbit for any technical issuesUtilize the sizing tool in Product Details below to ensure proper fit.</br>Get continuous?? automatic?? wrist-based heart rate and?simplified heart rate zones</br>Track workouts?? heart rate?? distance?? calories burned?? floors climbed?? active minutes and steps</br>Monitor your sleep automatically and wake