MWC 100ATM / 3,280ft / 1000m Water Resistant Diver's Watch Stainless Steel Case with Helium Valve and Matching Bracelet 100% Swiss Made with Sellita SW200 26-Jewel Automatic Movement

SKU: 100AT/SS/BB/200

MWC "Depthmaster" 100ATM Military Diver Watch

Introducing the MWC "Depthmaster" 100ATM Military Diver Watch, one of our latest and most robust models. This 100% Swiss-made diver's watch is designed to endure extreme conditions, featuring a sapphire crystal and a 100ATM (1,000 meters / 3,280 feet) water resistance rating. It is suitable for diving with mixed gases at extreme depths and includes a wider 24mm strap and a non-scratch ceramic bezel, making it easier to grip in extreme cold. These watches are specifically crafted for professional divers facing very challenging conditions.

Helium Escape Valve

All MWC 100ATM models come equipped with a helium escape valve. This feature addresses the issue of helium molecules entering the watch. Helium molecules are extremely small, allowing them to penetrate the watch seals even when other gases and water cannot. This can occur in saturation diving, where divers spend extended periods at great depths under high pressure.

Helium buildup inside the watch can create internal pressure, potentially causing serious damage or even blowing out the crystal or crown when unscrewed. This is particularly dangerous during time checks or resets. The helium escape valve automatically releases these molecules during decompression, ensuring the watch returns to normal sea level pressure without letting any external elements in.

Importance of Helium in Deep Diving

Helium is crucial for deep-sea diving because it does not cause nitrogen narcosis, unlike nitrogen. Helium replaces nitrogen in most deep-sea mixed gas diving applications. Professional divers working at great depths for extended periods often live in dry environments pressurized with an oxygen/helium mix. Upon surfacing and decompressing, this gas must be safely removed to avoid potentially hazardous situations like the crystal or crown being blown out, which could cause injury.

Specifications

• Movement: High-quality Sellita SW200, 28,800 bph, 26 Jewels, 38-hour power reserve with hacking function
• Water Resistance: 100ATM / 3,280ft / 1,000m
• Crown: Screwdown locking
• Helium Escape Valve: Yes
• Dimensions:
  • Width: 45mm
  • Thickness: 15.8mm
• Bezel Type: Unidirectional Non-Reflective with Ceramic Insert
• Crystal Type: Sapphire with Anti-Reflective Coating*
• Case: 316L Stainless Steel
• Illumination: Super Luminova on markers, hands, and bezel
• Strap: 24mm NATO Webbing Strap (1 x Black and 1 x Grey)

Benefits of Sapphire Crystal

Synthetic sapphire is the best material for watch crystals due to its exceptional strength and resistance to shattering and scratching. These properties make it highly appealing to military and security personnel, police officers, and individuals with active outdoor lifestyles, accounting for over 70% of our customers. In comparison, over 90% of cracked crystal incidents involve watches with mineral glass crystals. Even hardened mineral crystals cannot match the durability of sapphire under adverse conditions.

Sapphire crystals are heat-treated to remove internal stresses, enhancing their strength. They are made with two layers of anti-reflective coating. Interestingly, sapphire crystal is now also used in the latest iPhone models. While sapphire crystal is more expensive, it is typically found in higher-end watches due to its superior qualities.

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