1. It is a blood oxygen smart bracelet with a sports monitor. Unlike ordinary smart watches, it can not only monitor heart rate and blood pressure, but also monitor electrocardiogram, blood oxygen, heart rate variability, and judge various heart diseases. 2. Like other smartwatches, our devices can also record your daily physical activity, accurately measuring common physical activity. Calculate exercise duration, steps, calories, distance, etc. in different modes; and display calendar, alarm clock, week, remote control, countdown, sleep tracker, calculator, odometer, call reminder, etc. 3. In terms of hardware, our smart watch is equipped with a 1.65-inch high-definition full-scale touch screen, with clear and rich display and brilliant colors; 180mAh rechargeable lithium polymer battery, compatible with Android and iOS systems. 4. Wider Compatibility and Longer Battery Life: This sports watch is compatible with Android 5.0+, IOS 9.0+ and higher smartphones.