A built-in thermometer displays and checks the temperature every 5 minutes. The display can be converted from Celsius to Fahrenheit. Temperature ranges are from -10 to 60 degrees C (14 to 140 Degrees F). The thermometer may also be used underwater, for example to test the temperature of a river or stream.
• Temperature measurements are affected by your body temperature (while you are wearing the watch), direct sunlight, and moisture.
• To achieve a more accurate temperature measurement, remove the watch from your wrist, place it in a well ventilated location of of direct sunlight, and wipe all moisture from the case.