Marathon 41mm Pilot's Auto SSNAV-D Arctic Tritium Type II WW194030SS-0503

The Marathon 41mm Pilot's Automatic SSNAV-D Arctic Tritium Type II Ref. WW194030SS-0503 is a rugged Swiss-made military-inspired timepiece that combines authentic aviation heritage with modern mechanical engineering. Building upon Marathon's original Steel Navigator, developed in partnership with Kelly Air Force Base in 1986, this automatic interpretation is designed for pilots, military professionals, and everyday adventurers. Housed in a robust 41mm case constructed from 316L stainless steel with a military-grade Parkerized finish, the watch measures 11.5mm thick and features Marathon's distinctive asymmetrical case design. Its striking Arctic white dial incorporates bold black Arabic numerals, a dual 12- and 24-hour military time scale, and a discreet date window positioned at 4:30. Self-illuminating tritium gas tubes on the hands, hour markers, and bezel pip provide continuous visibility in low-light conditions without requiring an external light source. A scratch-resistant sapphire crystal, screw-down crown, and bidirectional 90-click rotating bezel with a 12-hour GMT scale complete its highly functional design.

Powering the Marathon SSNAV-D Arctic is the Swiss-made Sellita SW200-1 automatic movement, featuring 26 jewels, an Incabloc shock protection system, and an approximately 41-hour power reserve. Engineered to withstand demanding environments, the watch offers 100 meters of water resistance and a comfortable 48mm lug-to-lug measurement, providing a balanced wrist presence despite its rugged construction. The rotating bezel features inset-painted markings and an enhanced grip profile designed for easy operation while wearing flight gloves, further emphasizing its aviation-focused functionality. This particular reference is paired with Marathon's black military-specification nylon DEFSTAN strap, offering exceptional durability, comfort, and a classic tactical appearance. Unlike the traditional quartz-powered Steel Navigator models, the SSNAV-D Automatic incorporates the craftsmanship of a self-winding mechanical movement while retaining the reliability and straightforward functionality expected from a professional instrument. With its distinctive Arctic white dial, continuous tritium illumination, and authentic military heritage, the Marathon SSNAV-D Arctic WW194030SS-0503 is an outstanding choice for collectors seeking a capable and versatile Swiss-made aviation watch.

Reference: WW194030SS-0503

Bracelet: Nylon DEFSTAN strap

Case: 41mm x 11mm Thickness x 48mm lug to lug - Parkerized Stainless Steel

Water Resistance: 100m (10ATM)

Lug Width: 20mm

Movement: Sellita SW200-1 with Incabloc Shock Absorber - Automatic

Dial: White Dial - Tritium Gas Tubes

Bezel: Bi-Directional (12 Hour)

Functions: HMS, Date

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

Crystal: Sapphire

Bracelet size: 8.5"

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Marathon Watch Company has built a reputation as one of the most trusted military watch brands in the world. Founded in 1939, Marathon specializes in Swiss-made tool watches designed specifically for government and military use.

Unlike many luxury watch brands, Marathon focuses on function over flash. The brand has supplied U.S. and Allied forces with durable, high-performance timepieces for decades. Their watches are known for tritium gas tube illumination, allowing constant visibility in low-light conditions—no charging required.

Popular models like the Marathon GSAR (Government Search and Rescue) and TSAR (Tritium Search and Rescue) are built to withstand extreme environments, making them a go-to choice for divers, pilots, and professionals.

Today, Marathon continues to produce military-issued watches, combining Swiss craftsmanship, rugged durability, and tactical design. If you're searching for a reliable tool watch with real military heritage, Marathon stands in a class of its own.