Heart Rate & Sleep Monitoring: Built-in the Advanced Nordic 52832 Chip of Updated 2019 Version, minimum size, lowest power consumption, highest integration. Data full accuracy and battery life is longer! Tracks real-time heart rate automatically & continuously and automatically tracks your sleep duration & consistency with comprehensive analysis of sleep quality data, helping you adjust yourself for a healthier lifestyle. Takes only 1-2 hours to fully charge and lasts up to 7-15 days standby. All-day Activity Tracking: Accurately record all-day activities like steps, distance, calories burned, miles walked, active minutes, sleep status and more. Stay motivated all day! Multi-Sport Modes & Connected GPS: 14 exercise modes help you better understand specific activity data; Connect the GPS on your cellphone can show run stats like pace and distance and record a map of your workout route. Everything you need in a tiny tracker, heart rate monitor, step counter, stopwatch, reminder, calories counter, sleep monitor, supports 14 sports modes: Walk, Run, Spinning, Cycling, Dance, Climbing, Hike, Treadmill, Workout, Tennis, Yoga, Basketball, Football, Badminton. See Calls & Messages on Your Wrist: With a High-end Mobile Phone LCD Screen, the screen intensity is brighter! Receive call, calendar, SMS and SNS (Facebook, WhatsApp, LinkedIn, Instagram, and Twitter) notifications on display; Vibrates to notify you of incoming calls and messages; reminds you to move after periods of inactivity and important dates, helping you stay connected, never miss the messages that matter. 100% SATISFACTION GUARANTEE -JUMPER is your best choice. Our products are rigorously tested and made with love because we believe that you deserve the best. We remove all risk. You have absolutely no need to worry about getting a dud product as we promise to return your money if you are not happy with your purchase.