Large HD Color Screen & IP68 WaterproofThe 1.85-inch high-definition full touch screen and advanced sensors make the operation smoother, providing you with a better visual and user experience. IP68 waterproof standard allows you to enjoy water sports without fear. D1 smartwatch is designed with Bluetooth 5.2, which enable it runs faster and the data transmission is more stable.Health TrackerD1 fitness watch features over 100 sports modes, which can meet the need of most sports enthusiasts. It can automatically track your daily steps, distance, and calories. 24-hour heart rate and blood oxygen monitoring to help you better understand your physical condition. You can also obtain your sleep data to help you analyze your sleep quality and develop a better sleep habit and a healthier lifestyle.Wide Compatibility & Personalized Watch FacesD1 smart watch works as an extension of your phone so you can do more while on the go, bringing more convenience to your life.