Designed to work in the harshest environments, the G-SHOCK RANGEMAN from the MASTER of G line is a tough piece of outdoor gear. With a mud-resistant structure to keep out fine dust and dirt, it is designed to withstand the most punishing conditions and the worst weather situations. This rugged timepiece is equipped with solar assisted charging, a heart rate monitor, built-in GPS functionality, and a high-definition, high-contrast memory-in-pixel (MIP) LCD for an easy read. The case is guarded by sizable metal components on the left and right, protecting the GPS antenna and six sensors inside, to deliver whats needed for a wide range of activities. The trekking function allows checking heart rate while on the move to keep track of physical condition during workouts. Check the tide graph for low and high tides to get the most out of water sports. Enjoy all this functionality, with no sacrifice in comfort. The soft urethane band delivers a comfortable fit that, and is textured on the top side. The case, bezel, and band are made with bio-based resin.