Introducing the latest addition to the Casio G-SHOCK MUDMASTER series, featuring the all-new Carbon Core Guard case, with a dust and mud-resistant structure that can withstand harsh land environments. The GG-B100-1A3ER features a herringbone print, chrome finish bezel in black, completed with an army green resin strap. Dial details are highlighted in yellow and a digital sub-dial at 6 o’clock details information such as day, date and month. When paired with a smartphone, your watch automatically adjusts the time, and records mission logs, using altitude data from the watch and GPS data from the smartphone.