IYOUND Fitness Tracker Activity Smart Watch Color Screen with Heart Rate and Sleep Monitor, IP67 Waterproof GPS Route Tracking Step Calories Counter Pedometer Sports Bracelet Your Health Assistant This fitness tracker can connected GPS track your heart rate, blood oxygen, pedometer, calories counter, movement distance, sleep quality, 4 training modes it will satisfy all your needs for differents sports scenarios and accurately record all-day activities. Two replaceable straps that let you change as you wish. Color Screen & IP67 WaterproofThis activity tracker is the most popular features, color screen and slim design. Fitness tracker with 0.96OLED full touch screen, under the sun can also show a clear response to the touch interface, and up to IP67 waterproof standard, allows your washing hands, getting caught in the rain. Heart Rate & Sleep MonitorThe activity bracelet can monitor your heart rate 24 hours automatically and continuously to help you do exercise scientifically. Monitor your sleep automatically and analyze data intelligently such as deep sleep, light sleep and awake time, guides you to improve sleep quality. Built-in 5 alarm clock, adds different hours and different activities to wake you up. Multi-Sport ModesThe smart fitness band supports more features: Connected GPS tracking, blood oxygen, heart rate, sleep, sedentary remind, incoming call, alarm, anti-lost, wrist sense, remote camera control, date display, SMS, SNS message from some social apps, like Facebook, Twitter, Whatsapp. Built in USB Charge& WarrantyBuilt in USB Charge, smart tracker charge with USB block, computer or portable power bank. This fitness watch just need to charge 1-2 hours and standby time can be up to 5-7 days with full power. And we offer 18 months warranty, any problems, please do not hesitate to contact us or Amazon customer service. We reply most messages less than 12 hours.