Mi Band 2 uses a OLED display to allow you to have a clear view even in sunlight. Just lift your wrist to view the time and tap the button to see steps and heart rate. Mi Band 2's improved pedometer algorithm eliminates unnecessary movements. This measures the steps taken and the exercises more accurately. With integrated motion sensors and heart rate monitor, Mi Band 2 knows exactly when you start training. You don't have to change modes or notify them before you start. Use the data provided by the heart rate monitor to adjust the length and intensity of your workouts. Keep calm and work towards your training goals. Sedentary notices send a gentle tap when you've been sitting too long. These reminders inform you that the time has come for a short walk or a break.