Limited Edition Bronze MWC Depthmaster 100atm Military Divers Watch Automatic

MWC have created two special 100ATM models in bronze which are totally unique. Bronze is made of a combination of copper and tin, bronze also has some natural properties that set it apart from other MWC models made of stainless steel or titanium. The main difference is that bronze doesn't corrode in the same way as other metals, once it's manufactured it soon begins to develop a patina to protect it from damage and every watch develops this patina in a unique way so whilst every watch starts off looking exactly the same after a short time no two watches will look identical because the patina will be slightly different, it is this particular characteristic which makes bronze so desirable, interestingly even saltwater and brine can? T penetrate or damage bronze, despite the retro vintage look of bronze watch cases, the material was only used for the first time in watches less than 30 years ago even though bronze is one of the oldest metals known to man and was first made before 3000 BC!

These watches are specifically designed for use by professional divers under very challenging conditions. All MWC 100ATM models have a helium escape valve, people often ask us how helium gets into a dive watch in the first place and the answer is very simple, essentially a helium molecule is among the smallest of all molecules. What this means is because they are so small even though the seals are working fine to keep water out the helium molecules can still get through and enter the watch even though other gases and water cannot.

The main users professionally of watches with helium escape valves are saturation divers who spend long periods of time at great depth with high pressure, the result is that the helium molecules can build up inside the watch creating pressure inside the case which can inflict serious damage on the watch and even blow out the crystal or crown when it? S uncrewed which can be extremely dangerous if you are checking the time and also potentially write off the watch. The valve is only one way so it lets the helium out but prevents anything external from getting in. For anyone who does not know why helium is an issue, it? S important to understand why helium is employed for deep diving.

The answer is that helium is one of the very few gasses that does not have negative effects such as we see with nitrogen which causes nitrogen narcosis, consequently helium is used to replace nitrogen in most deep-sea mixed gas diving applications. In some situations, divers can operate at great depth for extended periods where they live in dry environments pressurized with an oxygen/helium mix. When the divers surface and decompress after days or even sometimes weeks this gas must be removed to prevent problems as mentioned earlier such as the crystal or crown being blown out which can potentially injure or even blind someone. The reality is that most divers will not be living in a pressurized environment for days or weeks on end, this means they will have no need for a watch equipped with a helium valve, regardless of how deep they dive but with deep diver watches such as our 100ATM range, it's essential the valve is there just in case it?

S needed because the watch would not be fit for purpose without it. The movement is a high-quality 24 jewel automatic NH35A with a hacking function to enable synchronization. The movement also has a 41-hour power reserve.

These watches are made as a limited edition of just 500 pieces worldwide of each of the two models. Movement: 24 Jewel Automatic NH35A with hacking function. Water Resistance: 100ATM / 3,280ft / 1000M.

Width: Inc Crown 47mm (Exc Crown 44mm). Bezel Type: Unidirectional Non-Reflective with Ceramic Insert. Crystal Type: Sapphire with Anti Reflective Coating. Illumination: Luminova on markers, hands, and bezel.

Strap: 24mm NATO Webbing Strap. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Watches\Wristwatches". The seller is "rj--store" and is located in this country: GB. This item can be shipped worldwide.

Model: 100ATM/12/BZ/AUT
Department: Men, Unisex Adult
Case Material: Bronze
Movement: Mechanical (Automatic)
Type: Wristwatch
Display: Analogue
Brand: MWC
Case Size: 44 mm
Water Resistance: 1000 m (100 ATM)
Strap Material: Nylon
Style: Military
Features: Limited Edition
Dial Colour: Black
Strap Colour: Multicolour