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MARATHON 41mm STEEL NAVIGATOR DATE (SSNAV-D) WW194013SS-0103
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All about the MARATHON 41mm STEEL NAVIGATOR DATE (SSNAV-D) WW194013SS-0103
New Edition of a Proven Mission Watch
The SSNAV-D, also known as the Steel Navigator with Date, is a completely redesigned version of Marathon's original tool watch, developed in collaboration with Kelly Air Force Base in 1986. This new model was specifically tailored to meet the demands of pilots, paratroopers, and other operational personnel who rely on maximum functionality and reliability in critical situations.
Inside the watch beats the modern ETA F06.412 HeavyDrive-PreciDrive quartz movement, offering exceptional accuracy of just ±10 seconds per year. This allows the SSNAV-D to achieve a precision that is unparalleled in its class. Another highlight: For the first time since the original Steel Navigator series, this model features a date display – a practical update that meets the demands of everyday use.
Robust Case for Daily Use
Crafted from 316L surgical-grade stainless steel, the case offers not only extreme durability but also a subtle, functional aesthetic. The 41mm diameter, combined with a screw-down crown and scratch-resistant sapphire crystal, makes the watch resilient to external influences. It is water-resistant up to 10 ATM, making it suitable for use in rain, wet terrain, or diving up to 100 meters deep.
Special attention was paid to redesigning the bezel. It is now tapered, providing an even more comfortable fit on the wrist – ideal for extended wear under various conditions. The bidirectional 12-hour GMT bezel has a raised shape, specifically optimized for operation with flight gloves. In addition, the indices are painted and recessed, which significantly improves legibility.
Luminosity Around the Clock
One of the most important features for military and tactical operations is visibility in the dark – and here, the SSNAV-D excels across the board. The watch is equipped with tritium gas tubes on all hour markers, as well as on the hour and minute hands. These tubes are self-illuminating and do not require an external light source to charge. They contain a hydrogen isotope that glows constantly – for years, without losing brightness. This ensures the watch remains reliably legible in all lighting conditions.
Clear View and Pressure-Resistant Construction
The highly transparent sapphire crystal not only protects the dial from scratches and impacts but is also specially designed to withstand extreme pressure differences. This is particularly important for high-altitude operations – for example, flights above 5000 feet – which are standard for military personnel. The combination of robust construction and state-of-the-art technology ensures that the watch provides a clear and precise time display even under the most adverse circumstances.
Swiss Quality Meets Canadian Design
Like all Marathon mission watches, the SSNAV-D is hand-assembled in the renowned Swiss watchmaking city of La Chaux-de-Fonds. Here, Canadian design seamlessly blends with excellent Swiss craftsmanship – an interplay that enjoys the highest recognition in the world of military timepieces. Whether in the cockpit, on a jump tower, or on an expedition – the SSNAV-D is ready for any challenge.
Specifications
- Movement: ETA F06.412 HeavyDrive-PreciDrive Quartz
- Accuracy: ±10 seconds per year
- Number of Jewels: 3
- Calendar Function: Date
- Number of Scales: 2
- Scale Range: 1–12 / 13–24
- Luminous Material: Tritium gas tubes
- Crystal Material: Synthetic Sapphire
- Case Material: 316L Surgical Stainless Steel
- Case Finish: Parkerized (matte)
- Case Diameter: 41 mm
- Water Resistance: 10 ATM / 100 m / 300 ft
- Crown Type: Screw-down crown
- Bezel Type: Bidirectional rotating
- Bezel Scale: 12-hour GMT scale
- Origin: Swiss Made, Canadian Design
- Dial: Black, with date window
- Legibility: Luminous indices and hands with tritium, 24/7 visible
Specification of the MARATHON 41mm STEEL NAVIGATOR DATE (SSNAV-D) WW194013SS-0103
Brand
MARATHON
Category
Pilot's watch
Diameter
41mm
Strap
Nylon
Dial color
Black
Dial
Indices
Waterproof
100m
Glass
sapphire crystal
Case
316L surgical steel
Movement
ETA F06.412 HeavyDrive-PreciDrive Quartz
Type
men's watch
Condition
New & OVP
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About David from WATCHDAVID
My name is David, and I've been deeply involved with watches for many years – not just as a dealer, but primarily as a tester, photographer, and classifier.
Since 2018, I’ve been running WATCHDAVID as an independent watch project featuring reviews, videos, and real-world wearing experiences. Many of the watches you'll find here have been on my own wrist – often for extended periods.
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You can revoke your purchase within 14 days of receiving the goods.
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Mechanics - Sometimes things can go wrong
Before I ship your order, I carefully inspect each watch for visible defects.
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