To minimize the difference between locally indicated and measured values, you should update the reference altitude value (offset) before setting off and during treks or any other activities where you take altitude readings.

Also, you can ensure accurate measurements by checking a map local altitude indications or some other source for your current location’s altitude, and regularly calibrating watch readings with the latest information while mountain climbing.

1.Enter the Altimeter Mode.

Navigating Between Modes

2.Hold down (E) for at least two seconds. Keep the button depressed when [SET] starts to flash. Release the button when [SET] disappears from the display.

This displays the current altitude and enters the Altitude Offset Mode.

3.Use (A) and (C) to change the altitude value to an elevation value obtained from another source.

Setting range: -3,000 to 10,000 meters (or -9,840 to 32,800 feet)

Setting unit: 1 meter (or 5 feet)

• To return the altitude setting to its initial factory default, press (A) and (C) at the same time.

4.Press (E) to complete the setting operation.