Resetting the Surface Pressure
The device automatically determines the surface pressure using the barometric altimeter. Large pressure changes, such as during a flight, can cause the watch to automatically start a dive activity. If the watch starts a dive activity incorrectly, you can reset the surface pressure by connecting the watch to a computer. If you do not have access to a computer, you can reset the surface pressure manually.
- Hold LIGHT until the watch turns off.
- Hold LIGHT to turn on the watch.
- When the product logo appears, hold MENU until you are prompted to reset the surface pressure.