To calibrate the temperature sensor 1. Take a reading with another measurement device to determine the exact current temperature. 2. Use A to enter the Thermometer Mode (TEMP), as shown on page E-31. 3. Pull out the crown. This will cause the current temperature reading value to fl ash on the digital display. • The timekeeping (hour, minute, second) hands will move to 2 o'clock. 4. Rotate the crown to adjust the temperature value. • You can also use HS1 high-speed movement (page E-6) to change this setting. • The calibration unit is 0.1°C (0.2°F). To return the setting to OFF (uncalibrated), press A and C at the • same time. 5. After you complete calibration, push the crown back in. Thermometer Precautions • Temperature readings are affected by your body temperature, direct sunlight, and moisture. To achieve a more accurate temperature reading, remove the watch from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the case. It takes approximately 20 to 30 minutes for the case of the watch to reach the surrounding temperature