The function is to display the time year and calendar.

No heart rate measurement function, no charging function, button battery operation.

The watch is not displayed for 24 hours, and it is displayed last afternoon.

The mode cannot be always on. If the touch is displayed for 3 seconds, it will automatically turn off.

L44 battery is used

This watch can be used as a disposable battery, because replacing the battery will damage waterproof adhesive, and the power is enough to run for more than one year.