Marathon Watch UK

Marathon Steel Navigator 41mm DEFSTAN

SKU: MA-WW194013GG-0103


Only 1 piece in stock!

A robust tool watch that represents a fully re-engineered upgrade to Marathon’s 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.

With the ETA F06.412 HeavyDrive-PreciDrive Quartz movement, the 41mm Steel Navigator with Date (SSNAV-D) stands out with unmatched precision, featuring accuracy of ± 10s/year. This model also exhibits a date complication - a first for any Steel Navigator since the design’s initial launch in the 1980’s. The SSNAV-D 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 refreshed case design features enhanced lug tapering, providing a comfortable fit making the SSNAV-D 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 minute/hour hands 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 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 5000ft – while also providing scratch resistance and pristine clarity. The SSNAV-D is Swiss-made and Canadian-designed for premium quality and craftsmanship.


A direct descendant of Marathon’s original Steel Navigator developed in the 1980’s, the 41mm Steel Navigator w/ Date (SSNAV-D) includes many upgrades inside and out.


Now the most precise watch in the Marathon electric watch lineup, the Steel Navigator w/ Date features an accuracy of ± 10s/year, operating at 32’768 Hz. This is made possible by the combination of ETA’s venerable quartz technology, as well as customizations specifically for Marathon.

We ship from our own stock, held in our UK warehouse. Place your order by 15:30 Greenwich Mean Time for same-day dispatch.

United Kingdom
Orders over £30 ship free of charge.

Orders below £200 ship for £6.00 
Order above £200 ship free of charge.

Rest of World
£12.50 shipping on all orders

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