Hold MENU, and select
Sensors & Accessories > Barometer.
Allows you to manually calibrate the barometer sensor.
Sets the time scale for the chart in the barometer glance.
Sets the rate of barometric pressure change that triggers a storm alert.
Sets the mode for the sensor. The
Auto option uses both the altimeter and barometer according to your movement. You can use the
Altimeter Only option when your activity involves changes in altitude, or the
Barometer Only option when your activity does not involve changes in altitude.