







Marathon Steel Navigator Automatic (SSNAV-D AUTO) on Nylon DEFSTAN Black Dial Men's Watch WW194030SS-0103
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The Marathon 41mm Steel Navigator Automatic Watch with Date (SSNAV-D AUTO) on Nylon DEFSTAN Strap WW194030SS-0103 is a precision-engineered timepiece designed for professionals who demand accuracy, durability, and style. Built to meet military standards, this rugged watch is perfect for tactical use, outdoor adventures, and daily wear, offering both reliability and timeless appeal.
Key Features:
41mm Stainless Steel Case: Crafted from marine-grade stainless steel, the robust case provides exceptional corrosion resistance and durability, making it suitable for harsh environments and long-term wear.
Swiss Automatic Movement: Powered by a self-winding Swiss automatic movement, this watch ensures precise timekeeping without the need for a battery, offering reliability and convenience.
Sapphire Crystal with Anti-Reflective Coating: The scratch-resistant sapphire crystal protects the dial and offers superior visibility in bright and reflective conditions, ensuring the watch remains easy to read in all lighting situations.
Date Functionality: The date window at the 3 o’clock position adds practical functionality, allowing you to keep track of important dates with ease.
Water-Resistant up to 100m (10 ATM): Designed for rugged use, this watch is water-resistant up to 100 meters, making it suitable for swimming, snorkeling, and general water activities.
Tritium Gas Illumination: The hands and hour markers are equipped with tritium gas tubes, providing constant illumination in low-light conditions, ensuring visibility in the darkest environments for up to 25 years.
Durable Nylon DEFSTAN Strap: The watch comes with a military-grade nylon DEFSTAN strap, designed for both comfort and durability, offering a secure fit during physical activities and outdoor use.
Military-Grade Durability: Built to meet strict military specifications, the SSNAV-D AUTO is made to withstand tough conditions, making it ideal for military personnel, adventurers, and those who require a highly reliable timepiece.
The Marathon 41mm Steel Navigator Automatic Watch with Date (SSNAV-D AUTO) is the perfect blend of rugged performance and sleek design, making it a reliable choice for both professional and everyday use. Whether you're exploring the great outdoors or handling tactical missions, this watch ensures you stay on time and ready for anything.
UK Delivery
| Selling Price | Royal Mail 48 (Tracked) |
Royal Mail 24 (Tracked & Signed) |
Special Delivery Next Day (Mon – Fri) |
Special Sunday Delivery (Before Sat 12pm) |
Royal Mail Special Delivery by 1pm |
|---|---|---|---|---|---|
| £0 to £99.99 | FREE | £4.99 | £7.99 | £7.99 | £9.99 |
| £100 to £499.99 | N/A | FREE | £7.99 | £7.99 | £9.99 |
| £500 or more | N/A | N/A | FREE | £7.99 | £9.99 |
We know your order is important to you, so we use Royal Mail’s tracked delivery service on all UK orders.
We also offer Royal Mail Special Delivery service, which for an additional fee offers guaranteed delivery the next day before 1pm.
*Royal Mail Tracked 24 and Royal Mail Tracked 48 services are 98% accurate but not guaranteed.
Orders placed before 5pm (Monday–Friday) are dispatched the same day. Orders placed on Saturday or Sunday are dispatched the following Monday.
International Delivery
We are pleased to offer worldwide shipping. For accurate shipping rates, please add the item to your basket. Once you enter your shipping address, you will be offered all available options.
For the EU, EEA, and the rest of the world, the total price shown at checkout includes only the outbound Royal Mail / DHL shipping cost. You will be contacted by Royal Mail / DHL regarding duties and taxes. If you refuse the parcel and do not pay the required customs or duties, the outbound shipping cost will be deducted from your refund.
On average, delivery to the EU takes 3–5 working days, and delivery to the rest of the world takes 5–7 working days.
More about delivery...

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Frequently Asked Questions
Yes — we are an Authorised Dealer for every brand we sell. All watches come with an official box, papers, and a full manufacturer’s warranty.
Every watch includes a manufacturer warranty. You’ll find more warranty info listed in the product description.
Orders placed before 5pm (Mon–Fri) are dispatched the same day. Order before 12pm on Sat for same-day dispatch. Free UK delivery is available on all orders, and tracking details are provided once shipped.
Yes — you have 30 days from delivery to return or exchange your item, provided it’s unused and in its original packaging.




