When you perform the procedure below in the Barometer Mode, the second hand will indicate the difference between the current barometric pressure measurement and the last auto measurement value (taken at two-hour intervals).

1.Press (D).

The second hand will indicate the barometric pressure differential (Pressure Differential Indicator).

Example: Barometric pressure differential of -3 hPa (approximately -0.09 inHg）

2.To exit barometric pressure differential indication, press (D).

• Each press of (D) toggles the second hand between barometric pressure differential and current time seconds indication.