The GW9400 RANGEMAN is equipped with Triple Sensor to deliver altitude direction temperature and barometric pressure readings directly to your wrist. The cylindrical button guard structure ensures smooth and accurate operation of the sensor button. Press the sensor button and the most recently used sensor mode is instantly displayed. Three different types of beeps indicate different measurement modes handy for no-look operation that frees your focus for rugged adventure. Features Digital Compass Altimeter/Barometer Thermometer.