The main interface displays the data about step counting, distance, and calories you have
burned. The buttons on the upper right corner of this interface allow you to synchronize
and share history data. By clicking the heart-shaped icon in the center, you can perform a
heart rate test. The APP will measure and record your current heart rate data. Once the
detection at the APP end is finished, the heart rate detection will stop automatically.
By clicking the Setting icon on the upper right corner, you can set the heart rate warning
(vibration) switch and the heart rate warning threshold. Then, after you synchronize this
