[Long Battery Time] One full charge takes about 2 hours. One single charge gives you up to 7 -10 days of working time for daily progress—universally compatible with Android 4.4 or higher, iOS 8.0 or higher smartphones. [Funny and Convenient Design] Full touch screen makes it more convenient and easy to operate. The custom watch dial, Remote photograph, find phone and device, message and incoming call notification, Sedentary reminder, alarm clock and stopwatch function, which always concern you and your family's health and life. [Multiple 6 Exercise Modes] Outdoor Run/Outdoor Walk/Outdoor Cycle/Indoor Run/HIIT/Rope Skipping sport modes to choose from. Show you real-time duration steps HR distance calories on the fitness tracker. Know exactly how every part of your day gets you closer to your goals. IP68 waterproof makes you enjoy water activities. [All Day Health Tracking] Accurately track sleep from 8:00 pm to 10:00 am. Cared for you with more detailed sleeping data like deep sleep/light sleep in the App. The Greenlight + infrared dual detecting for heart rate with personalized in-app reports let you know your kid’s health more specifically. So pay more attention to creating a healthy and happy growth environment for family and kids. [Body Temperature&SpO2 Monitor] Scientifically track and record body temperature and blood oxygen all the time, show you a detailed line chart and check the highest, lowest and average temperature in-app Conditions. 24 hours continuous blood oxygen monitoring, record kid's real-time SpO2 activity, help you know physical state accurately and timely.