To calibrate the pressure sensor and the temperature sensor

To calibrate the pressure sensor and the temperature sensor

• Incorrectly calibrating the temperature sensor can result in incorrect readings.

Carefully read the following before doing anything.

  • Compare the readings produced by the watch with those of another reliable and accurate thermometer. 
  • If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch time to stabilize.
To calibrate the pressure sensor and the temperature sensor



1. Take a reading with another measurement device to determine the exact current barometric pressure or temperature.
2. In the Barometer/Thermometer Mode, hold down E for at least two seconds. You can release E after TEMP appears.
• The current temperature calibration setting will flash in the display
at this time.
3. Press D to move the flashing between the temperature value and barometric pressure value, to select the one you want to calibrate.
4. Use A (+) and C (–) to select the temperature and barometric pressure value display units as shown below.
Temperature 0.1°C (0.2°F)
Barometric Pressure 1 hPa (0.05 inHg)
• To return the currently flashing value to its initial factory default setting, press A and C at the same time. OFF will appear at
the flashing location for about one second, followed by the initial default value.
5. Press E to return to the Barometer/Thermometer Mode screen.