1. Nonstandard way of wearing will affect the measurement of heart rate signal, such as light leakage caused by incomplete fit, arm swing and slight movement of watch on skin. Wearing watch too tightly, raising arm and clenching will affect blood circulation, and may also affect heart rate inaccuracy.
2. Check the condition of wearing. It needs to be a little tight when checking. If you move the watch above, down, left and right, it can't slide. Secondly, it is necessary to verify the position of wearing the watch. It is not allowed to wear it at the wrist joint. If the wrist joint moves more, it is easy to cause a loose fit between the bottom of the watch and the skin.
