H30A smart sports watch, 1.75" HD touch fitness tracker for Android & IOS phones, heart rate monitor, blood oxygen, waterproof, black Main Functions: 1.Sports mode, body detection. 2.Bluetooth call,Mobile phone synchronization of frequently used contacts. 3.Custom watch face.Support APP custom watch face.Bluetooth transmission function.You can set the photo in the phone asthe background of the dial. 4.Motion Monitoring, Record your every exercise. 5.24-hour heart rate monitoring.