Marathon Navigator 41mm Black Dial Nylon Mens Quartz Watch WW194013BK-0101

The Marathon Navigator WW194013BK-0101 is a 41mm pilot’s quartz watch developed from the Navigator series, which Marathon originally developed in partnership with Kelly Air Force Base in 1986. The NAV-D is designed for high-altitude flight and features a black Type II dial with a date display, while the CeraShell® case combines bio-sourced plastic and ceramic powder to reduce weight. The case measures 41mm in diameter, 11.5mm thick and 48mm from lug to lug, with 20mm lugs. A scratch-resistant sapphire crystal protects the dial and is designed to withstand rapid changes in air pressure encountered at high altitudes.

ETA F06.115 HeavyDrive Quartz Movement

The watch is powered by the Swiss-made ETA F06.115 HeavyDrive Quartz movement with 3 jewels, a date function and an accuracy rating of -0.2 to +0.5 seconds per day. The movement is designed for reliable timekeeping in demanding conditions, while the pressure crown and CeraShell® case provide water resistance to 6 ATM (60m/195ft).

Bi-Directional 12-Hour GMT Bezel

The NAV-D features a bi-directional 12-hour aluminium GMT bezel for tracking a second time zone. The increased bezel height provides improved grip, while the inset-painted indices improve the legibility of the markings. The watch also features an asymmetrical case design and removable spring bars, with the CeraShell® construction providing a lighter alternative to traditional case materials.

Tritium Gas Tubes & Ballistic Nylon Strap

Self-contained Tritium Gas Tubes are positioned on the hour markers, minute and hour hands and bezel pip, providing continuous visibility in low-light conditions without requiring an external light source. The sapphire crystal provides scratch resistance and supports use at altitudes above 35,000 feet. The WW194013BK-0101 is supplied on a ballistic nylon strap, while the current Marathon listing also identifies the model as Swiss-made and Canadian-designed.