Description: Improved pedometer algorithm in Mi Band 2 filters out unnecessary movements. This measures steps taken and exercise more accurately. Built in motion sensor, Mi band 2 knows exactly when users begin workout. No need of switching modes or tell it before workout starts. Measure heart rate to adjust the length and intensity of workouts. Keep calm and work toward your fitness goals. Idle alert with a gentle buzz as reminders for short break or water break. OLED display that shows time, steps and heart rate.