Product Descriptionmake every beat count with Fitbit charge 2-the heart rate and fitness wristband built for all-day, workouts and beyond. Pure pulse continuous heart rate makes it easy to maximize workouts, better track calorie burn and get a snapshot of your cardio fitness level, while all-day activity and auto sleep tracking, lets you see how your whole routine adds up. Record your workouts with multi-sport modes to see real-time workout stats on screen, or rely on smart track to automatically record select exercises for you. The large oled display helps you stay connected with call, text and calendar alerts, stay active with reminders to move, and find moments of calm with guided breathing sessions. In addition, you can find a look that fits your style with customizable clock faces and interchangeable bands. Sync wirelessly and automatically to 200+ iPhone, android and windows devices, and with more advanced features in a sleeker package and a battery life of up to 5 days, its the motivation you need to push yourself further-every step, every beat, every day.syncing range: up to 30 feet. Synchronizing requires Bluetooth le and internet connection. Windows 10 computers that do not have Bluetooth le will need a wireless sync dongle in order to synchronize. Syncs with mac os x 10.6 and up, iPhone 4s and later, iPad 3 gen. Moreover, later, android 4.4 and later, and windows 10 devices.From the ManufacturerA better you starts with heartGet PurePulse continuous, automatic wrist-based heart rate tracking to maximize workouts, better measure calorie burn all day and to gauge how your cardiovascular health and fitness levels change over time - all without an uncomfortable chest strap. Conquer your dayTrack steps, distance, calories burned, floors climbed, active minutes & hourly activity with up to 5-day battery life. Stay connected with call, text and calendar alerts on your wrist and transform your Charge 2 from workout to night out with stylish accessory bands. Shed light on your nightAutomatically track your sleep duration, consistency and quality, including time in light, deep and REM sleep. Then wake up peacefully with a silent alarm. Push your fitness furtherTrack specific exercises like running, weights or yoga to see your workout stats on display. Connect to your phones GPS to see real-time run stats like pace and distance on your wrist. See the whole pictureSet goals, log food, track workouts, review sleep and connect with friends on the Fitbit app - the fitness app for everyone. Make every beat countOur 1 selling fitness wristband - built with PurePulse heart rate, multi-sport modes, guided breathing sessions & interchangeable bands.Manufacturer Contact InformationCustomers contact: supportfitbit.com