Marathon
41mm Official USMC Sage Green Pilot's Navigator with Date (Quartz)

The Navigator Class of Wristwatches was developed in conjunction with Kelly Air Force Base in 1986. The Navigator features a high-torque movement and an EOL (end-of-life) indicator. It has tritium tubes on the hour markers and hands for legibility in all lighting conditions, and a 12-hour bi-directional bezel. The 41mm high-impact composite fiber shell case is engineered to withstand harsh environments.