G-SHOCK RANGEMAN GPRH1000, in an extra rugged design, is equipped with an optical sensor to measure heart rate, a compass, altitude/air pressure sensor, thermo sensor that measures temperature, and accelerometer and gyroscope to detect body movement. The new RANGEMAN is made of Bio-based resin, a plant-derived renewable material. Shock resistance, 200-meter water resistance, and solar assisted charging make this an exceptional timepiece.