MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch in a Titanium Case with GTLS and Helium Valve (Automatic)

SKU: T100AT/1224/ST/AUT

The MWC Titanium Depthmaster is our latest heavy-duty professional dive watch and is engineered for extreme environments. Designed around real operational requirements rather than cosmetic “dive styling,” this model combines 100ATM (1000m / 3,280ft) water resistance, a sapphire crystal, ceramic bezel and always on GTLS / tritium illumination.

Unlike many oversized dive watches, the Depthmaster is built to remain wearable for extended periods. Large military watches are frequently manufactured in titanium to reduce fatigue — the reduction in weight makes a substantial difference when worn daily for long durations, particularly on a 47mm watch designed for all types of diving from Scuba to Saturation diving.

The watch uses a wider 24mm strap (most military divers use 20mm) for improved stability and security during active use, and the ceramic bezel offers excellent grip even in wet or extremely cold conditions.

This particular variant features a 24-hour military dial for quick time interpretation in operational or low-light conditions.

Helium Escape Valve (Why It Exists)

All MWC 100ATM models include an automatic helium escape valve.

Helium molecules are extremely small. During saturation diving, they can slowly enter the watch case while divers live in pressurised environments using helium-oxygen breathing mixtures. When the diver returns to surface pressure, trapped helium expands and can force out the crystal or damage the crown.

The one-way valve automatically releases the internal gas during decompression, preventing damage to the watch.

This feature is primarily required by saturation divers. Most recreational divers will never need it, but a true professional-grade deep diver must include it to be fully fit for purpose.

Sapphire Crystal

The watch is fitted with an anti-reflective sapphire crystal. Sapphire is significantly more scratch- and impact-resistant than mineral glass and far more durable than acrylic. In real-world service use, the overwhelming majority of cracked crystals occur on mineral or acrylic watches — sapphire dramatically reduces that risk.

Movement

The Depthmaster is powered by the reliable 24-jewel NH35A automatic movement with hacking function, allowing precise synchronisation.
Power reserve: approximately 41 hours.

Specifications

• Movement: 24-Jewel Automatic NH35A with hacking (hand-winding capable)
• Water Resistance: 100ATM / 1000m / 3,280ft
• Crown: Screw-down, sealed
• Helium Escape Valve: Automatic one-way release valve
• Case Diameter: 44mm (47mm including crown)
• Thickness: 18mm
• Lug-to-Lug Length: 48mm
• Case Material: Titanium
• Crystal: Sapphire with anti-reflective coating
• Crystal Diameter: 31mm
• Bezel: UnidireLuminova on hands, markers and bezel
• Lugs: Spring-bars
• Strap: 24mm military NATO webbing strap (1 x Grey and 1 x Black)
• Weight: Approx. 85g

Designed for Real Conditions

Professional divers, maritime personnel and military users often operate in cold, wet and high-pressure environments for extended periods. Watches in this category are intended to be reliable equipment rather than jewellery. The Depthmaster is built accordingly: high water resistance, continuous night visibility, shock resistance and simple operation while wearing gloves.

This is not a fashion diver — it is a functional instrument watch engineered for harsh service conditions.

Europe, UK, and Rest of World

Tracked Mail:

• Europe: €11.75 / £9.99 / US$12.95
• UK: £7.95 / €9.50 / US$10.50
• Rest of World: US$22.75 / €20.50 / £17.50

Express Courier (UPS or FedEx):

• Europe: €23.50 / £19.99 / US$25.95
• UK (UPS/DPD):  £12.95 / €15.25 / US$16.95
• Rest of World: US$45.50 / €41.25 / £34.95

Note: The exact shipping cost may vary slightly depending on the weight and dimensions, but it will only differ by a small amount and will be shown at checkout. The above rates cover approximately 85% of parcels.

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If you are not satisfied with your purchase or it does not meet your requirements, you can return it within 14 days of receipt. The item must be in its original condition and packaging. To return a watch, please notify us using the form at the link below.

Please note that the watch, strap, or other purchased item must be in new and resalable condition. The returns policy will not apply if the item has been worn, the plastic protectors on the dial and/or caseback have been removed, or if there are other signs of usage, such as a worn strap. Essentially, the goods should not have been used beyond what would be expected if you had handled or examined an item in a shop before purchase.

To request a return authorization number, please visit this link.

Read our full returns policy here