The Marathon 41mm NAV Pilot’s Quartz Standard-Issue Tritium Type II (ref. WW194001BK-0801) is a direct evolution of the original Navigator watch developed with Kelly Air Force Base in 1986 for military pilots and parachutists operating at extreme altitudes. Designed around lightweight durability and absolute reliability, the modern NAV uses Marathon’s proprietary CeraShell® composite case construction—a blend of bio-sourced material and ceramic powder—paired with an aluminum bi-directional 12-hour bezel for second time zone tracking. The asymmetrical case profile, highly legible Type II dial, and black ballistic nylon strap reinforce its purely functional military design language.

Powered by the Swiss ETA F06.105 HeavyDrive quartz movement, the NAV delivers exceptional accuracy and shock resistance while remaining lightweight enough for extended operational wear. The watch features self-illuminating tritium gas tubes on the hands, hour markers, and bezel pip, providing constant visibility in darkness without needing an external light source. Sapphire crystal, a screw-down crown, and 60 meters of water resistance add durability for real-world field use rather than luxury appeal.

Information:

Reference: WW194001BK-0801

Bracelet: Nylon Strap

Case: 41mm x 11.5mm Thickness x 48mm lug to lug - CeraShell Parkerized

Water Resistance: 60m (6ATM)

Lug Width: 20mm

Movement: ETA F06.105 HeavyDrive-PreciDrive Quartz

Dial: Black Dial - Tritium Gas Tubes

Bezel: Bi-Directional (12 Hour)

Functions: HMS

Box and Papers: Inner/outer boxes, and warranty card

Crystal: Sapphire

Bracelet size: 7.75"

Condition: New