The Casio GW9400-1 or Rangeman is a wrist watch for men from the Casio Master of G series. The watch is designed to withstand harsh conditions. The Rangeman comes with integrated sensors, which make it capable of showing the altitude, the barometric pressure, the temperature, and direction. The watch also employs radio calibration which keeps the displayed time accurate. Further it is solar powered with a solar rechargeable battery, mud, dust, and shock resistant. The GW9400-1 offers several memory capabilities, timer functionality, and calendar programming.