41MM Pilot's Steel Navigator Date (SSNAV-D) by Marathon (WW194013SS) PRODUCT STRAP STYLE:Both straps available with no government markings

available with no government markings or U

low-temperature resistance (-20°C / -4°F)

These are scarce and this is only one of a handful I've seen since I've been collecting chronometers (I have one in my collection)

minute and hour hands (LLT) - LLT: Self-powered illumination system employing tiny micro gas light sources

- Miyota Japan 2105 movement

41MM Pilot's Steel Navigator Date (SSNAV-D) by Marathon (WW194013SS) PRODUCT STRAP STYLE:Both straps available with no government markingsNew, current production, Type II, Pilot's Quartz with Date, Sapphire crystal and Tritium, black dial, no government markings. A robust tool watch that represents a fully re engineered upgrade to Marathons original Steel Navigator, developed in partnership with the Kelly Air Force Base in 1986. The Steel Navigator with Date boasts enhanced functionality and unmatched accuracy that caters to pilots, parachutists, and adventurers. Full 2 year