2. The new functions of MiBand 8 include: blood oxygen saturation detection, women's health tracking, AI voice assistant, multiple exercise modes and longer battery life. Blood oxygen saturation detection mi band 8 adds the function of blood oxygen saturation detection, which can help users to know their physical condition.
3. The three circles of MiBand 8 represent exercise, heart rate and mobile phone notification respectively. The specific explanation is as follows: sports circle: tracking and recording sports data, including steps, calorie consumption, distance and exercise time. Heart rate circle: record and display heart rate data, and monitor heart rate changes in real time.