Make every beat count with Fitbit Charge 2the heart rate and fitness wristband built for all-day, workouts and beyond. PurePulse 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 SmartTrack 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. Plus, 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 furtherevery step, every beat, every day. PurePulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day Maximize your workouts using simplified heart rate zones (Fat Burn, Cardio and Peak) See call, text calendar notifications on the OLED display; Automatically track how long and how well you sleep and wake with a silent vibrating alarm Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score; Use Connected GPS during run mode to see real-time stats like pace and distance on your wrist Track all-day activity like steps, distance, calories burned, floors climbed and active minutes;Find moments of calm throughout your day with personalized guided breathing sessions based on your heart rate, Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements Product will either come in original packaging that is in less than perfect shape and has been opened to inspect contents or will come in non-retail packaging (brown/white box or white/clear bag). PurePulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day Maximize your workouts using simplified heart rate zones (Fat Burn, Cardio and Peak) See call, text & calendar notifications on the OLED display; Automatically track how long and how well you sleep and wake with a silent vibrating alarm Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score; Use Connected GPS during run mode to see real-time stats like pace and distance on your wrist Track all-day activity like steps, distance, calories burned, floors climbed and active minutes;Find moments of calm throughout your day with personalized guided breathing sessions based on your heart rate, Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements