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41mm Steel Navigator w/ Date Automatic (SSNAV-D AUTO) on Nylon DEFSTAN

€1.166,40 Regular price €1.296,00

Price includes taxes and fees.

The 41mm Steel Navigator w/ Date Automatic (SSNAV-D AUTO) is the first ever Steel Navigator to feature a self-winding automatic movement. Packed with Swiss-precision and reliability, the SSNAV-D Auto is developed for pilots and everyday adventurers. The watch represents the continued lineage of Marathon’s original Steel Navigator, developed in partnership with the Kelly Air Force Base in 1986.

SKU: WW194030SS-0103

Two year warranty

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41mm Steel Navigator w/ Date Automatic (SSNAV-D AUTO) on Nylon DEFSTAN

€1.166,40 EUR Regular price €1.296,00 EUR










The 41mm Steel Navigator w/ Date Automatic (SSNAV-D Auto) is powered by a 26 jewel Sellita SW200-1, with Incabloc® Shock Absorber for added protection against vibration and harsh impact. This automatic version of the Steel Navigator is a return to the world’s original pilot’s watches – calling back to the pre-1980's era when most issued wristwatches were hand-wound or automatic. This model also exhibits a date complication at the 4:30 position.

The SSNAV-D Auto is built from 316L surgical-grade stainless steel with a screw-down crown and synthetic sapphire crystal, making it operational even when submerged to 10ATM (100m/300ft). The case design features enhanced lug tapering, providing a comfortable fit and making the SSNAV-D Auto ideal for all-day wear. The increased height of the 12HR GMT bezel is specially designed to provide improved grip, allowing pilots to easily handle the bi-directional rotation while wearing flight gloves. The bezel also features inset-painted indices, enhancing the legibility of the markings.

Self-contained tritium gas tubes on the hour markers, and full hand set ensuring constant visibility in low-light environments. Tritium tubes are self-illuminating, containing an isotope of hydrogen that won't dull down over time like photoluminescent paint, meaning the watch will remain fully legible at all hours.

Protecting the dial of the SSNAV-D Auto is a highly durable sapphire crystal. This allows the watch to withstand extreme changes in air pressure – necessary for the watch’s use by military pilots at altitudes of over 35,000ft – while also providing scratch resistance and pristine clarity. The SSNAV-D Auto is Swiss-made and Canadian-designed for premium quality and craftsmanship.

Technical Information

Movement: Sellita SW200-1 with Incabloc Shock Absorber

No of Jewels: 26

Scale Quantity: 2

Scale Range: 1-12 (13-24)

Calendar Type: Date

Luminous Features: Tritium Gas Tubes

Crystal Material: Sapphire

Crown Type: Screw-Down

Case Material: 316L Stainless Steel

Case Finish: Parkerized

Bezel Type: Bi-Directional

Bezel Scale: 12 Hour

Submersibility: 10 ATM

Re-Engineered For Premium Performance

The Steel Navigator Series is built with enhanced engineering to meet the needs of modern pilots. Improved impact resistance and altitude rating, highly reliable Swiss-precision, and an all-around more comfortable wear all combine to create a tool watch worthy of the military elite.


Under the hood of the SSNAV-D Auto is a self-winding automatic movement. The SSNAV-D uses an enhanced version of the SW200-1 produced by Swiss manufacturer, Sellita, with customizations made specifically for Marathon. With proper maintenance, this watch is built to last a lifetime. We recommend following our Care Tips to help keep your automatic movement running with Marathon-level precision.

The Navigator Pilot Series

Marathon Navigator (NAV) watches were originally developed in partnership with Kelly Air Force Base in 1986. The NAV Series consists of timepieces engineered to stand up to the rigours of high-altitude flight — and even possible ejection from a fighter aircraft. Featuring an iconic asymmetrical case design available in both 316L stainless steel and high-impact composite fibreshell for ultra-light durability, each watch is equipped with a sapphire crystal tolerant of rapid changes in air pressure; a continuously glowing dial; and a bi-directional bezel with the ability to track a second time zone.


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