The Marathon General Purpose Mechanical in Steel is a re-interpretation of the historic Marathon GG-W-113 field watch used throughout the 1980s by the US Army. Built with a case made from 316L surgical grade stainless steel, and wind-up ETA 2801 movement, the Marathon General Purpose Mechanical in Steel is a vintage inspired timepiece that is as good looking as it is durable. Packing features essential for military operations, such as a 24-hour dial, nylon strap, drilled lugs, hacking seconds and much more, it’s a tough yet beautiful watch with an equally amazing hand winding movement. The crystal (glass lens) of the Marathon General Purpose Mechanical in Steel is made from sapphire, as sapphire crystals offer the ultimate in scratch resistance and overall durability as well as clarity of dial viewing, an essential factor for military personnel. To assist in low light viewing, the dial of the watch uses tritium tubes for the hour indices as well as the hour and minute hands. Tritium is a self-illuminating gas which will provide a 24/7 glow without the need for charging by an external light source. A return of a classic, the watch is sure to please as a tool watch or casual accessory for everyday wear.