SKU: 56516486341

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

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Description

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 MovementSKU: 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 bracelet and a non scratch

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 bracelet 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
  • Bracelet: 24mm  stainless steel

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.

Shipping Notes
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 56516486341

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Jo
Waukegan, US
★★★★★ 5
PLUSH! Fabulous yoga mat!
Color: Black, Style: 1/2 Inch
SO comfortable! It feels like a soft memory foam padding. I use it for several exercise classes and it is great for all of my needs! I love the strap it comes with to keep it rolled up in between classes and the ability to carry it anywhere.
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Reviewed in the United States on May 3, 2026
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Sandra
Natrona Heights, US
★★★★★ 5
very comfortable and thicker than a regular yoga mat
Color: Pink, Style: 1/2 Inch
This yoga mat is very comfortable and thicker than a regular yoga mat. The quality is excellent, and it doesn't have that strong rubber smell that many mats have. I'm very happy with it!
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Reviewed in the United States on June 2, 2026
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Pam Burleson
Fort Morgan, US
★★★★★ 5
Great product
Color: Black, Style: 1/2 Inch
Nice yoga mat. Perfect thickness for me. Love that I can roll it up and put it out of the way. Gives great knee support and the material is comfortable.
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Reviewed in the United States on May 6, 2026
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Diamond Butterfly
Bozeman, US
★★★★★ 5
Love my mat!
Color: Pink, Style: 1/2 Inch
I’m new to stretching and recovery classes, and there is a lot of floor work. I was using the gym mats, but my knees, lower back, and glutes were hurting from being on the floor. This mat is the perfect thickness and feels wonderful during floor exercises. It gives me the extra cushion I need without being difficult to use. It’s also lightweight, durable, easy to clean, and easy to roll up for transport. The pink makes me smile. That said , the mat makes the classes more enjoyable.
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Reviewed in the United States on May 2, 2026
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RA
Lake Worth, US
★★★★★ 5
Great value
Color: Aqua, Style: 1-Inch
Perfect exercise mat. It is nice and thick, and comfortable to kneel and lay on. Can't comment on durability, but so far, so good. Recommended.
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Reviewed in the United States on May 14, 2026

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