Whatever youre doing, wherever you are the G-SHOCK Master of G line has your back.For total support in the harshest environments, this RANGEMAN watch delivers peak performance in punishing conditions on land. Each watch in this collection features bold black to exude toughness and a band in the same bright yellow used for emergency rescues and safety signs. This innovative design is a sure fit for the world of professionals involved in rescue efforts and other critical missions.The RANGEMAN GPRH1000RY is built with a dust, mud, and shock-resistant structure and also comes equipped with six sensors that take a myriad of measurements including heart rate, and with built-in GPS to measure location, distance, and travel speed. Keep track of your physical condition in real time during 9 different activities, including trekking.This tough watch delivers what you need to make quick decisions and take decisive action in the harshest of environments.