Rangeman employs a Shock Resistant Triple Sensor, which makes it capable of keeping altitude, barometric pressure, temperature and direction readings at your fingertips. Cylindrical buttons provide outstanding operation and improved resistance to impact. The frequently used sensor button (center right) has a metal cover that protects it against lateral impact and keeps foreign matter out. Pressing the sensor button in any mode takes you directly to a sensor screen. Each sensor mode has its own audible tone, which means you can determine which mode you are entering without even looking at the watch.