Built for extreme environments, the G-SHOCK Master of G MUDMASTER GG-B100XM-1A is engineered for exceptional durability and performance. Designed to withstand mud, dust and impact, it features a robust stainless steel bezel with a honed finish and a high-rigidity carbon case for enhanced strength and shock resistance. A mud-resistant filter, stainless steel screw-back and reinforced resin back cover provide reliable protection in challenging conditions. Equipped with a digital compass, altimeter, barometer, thermometer and step counter, it also connects to the CASIO WATCHES app for time correction and features such as Mission Log. Select components use bio-based resin derived from renewable resources, combining advanced functionality with a reduced environmental impact.