- This watch estimates altitude based on air pressure. This means that altitude readings for the same location may vary if air pressure changes.
- Do not rely upon this watch for altitude reading or perform button operations while sky diving, hang gliding, or paragliding, while riding a gyrocopter, glider, or any other aircraft, or while engaging in any other activity where there is the chance of sudden altitude changes.
- Do not use this watch for measuring altitude in applications that demand professional or industrial level precision.
- Remember that the air inside of a commercial aircraft is pressurized. Because of this, the readings produced by this watch will not match the altitude readings announced or indicated by the flight crew.
Precautions Concerning Simultaneous Altitude and Temperature Readings
- For the more accurate altitude readings, leaving the watch on your wrist is recommended in order to maintain the watch at a constant temperature.
- When taking temperature readings, keep the watch at as stable a temperature as possible. Changes in temperature can affect temperature readings. See product specifications (page E-100) for sensor accuracy information.
