General Purpose Mechanical GPM 34mm

Marathon General Purpose watches reference the brand’s original field watches issued to the Allied Forces in 1941. This modern model, commonly known as the General Purpose Mechanical (GPM), has direct lineage to Marathon's famous field watch, and can be wound through the automatic self-winding rotor or manually via the crown. To ensure its durability, the GPM is manufactured in accordance with U.S. military standard MIL-PRF-46374G, Type II, Class 4. Hyper-functional field watch built to U.S. mil-spec standards