MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch in Stainless Steel Case with Helium Valve (Quartz)

Product Details

SKU: 100AT/12/SS/QZ/ST

This model in both PVD and Stainless Steel versions is now sold out and discontinued. It was made for a procurement company that secured a contract to supply a watch with this particular specification, which differs in some ways from our other 100ATM watches. Most of the additional requirements specified for the contract are outlined below.

MWC "Depthmaster" Military Diver Model

The MWC "Depthmaster" Military Diver models are MWC's latest heavy-duty range. These watches are extremely robust, featuring a sapphire crystal and a 100atm water resistance rating, making them suitable for diving with mixed gases at extreme depths. They also come with a wider 24mm strap (most military diver watches use a 20mm strap) and a non-scratch ceramic bezel, which is easier to grip in extreme cold. These watches are specifically designed for professional divers operating under very challenging conditions.

Helium Escape Valve

All MWC 100ATM models are fitted with a helium escape valve. People often ask how helium gets into a dive watch. Essentially, a helium molecule is among the smallest of all molecules. Because they are so small, even though the seals keep water out, helium molecules can still enter the watch.

Professional users of watches with helium escape valves are saturation divers who spend long periods at great depths under high pressure. Helium molecules can build up inside the watch, creating pressure that can damage the watch or blow out the crystal or crown. This is extremely dangerous if you are checking or resetting the time. The helium escape valve allows the helium molecules to escape during decompression when the watch returns to normal sea level pressure. The valve is one-way, letting helium out but preventing anything external from getting in.

Why Helium Is Important in Deep Diving

Helium is used in deep-sea mixed gas diving because it does not have the negative effects of nitrogen, such as nitrogen narcosis. Consequently, helium replaces nitrogen in most deep-sea mixed gas diving applications.

Professional divers can operate at great depths for extended periods, living in dry environments pressurized with an oxygen/helium mix. When they surface and decompress, this gas must be removed to prevent problems like the crystal or crown being blown out, which can potentially injure or even blind someone.

Special Features of This Model

While this watch is similar to our other 100ATM models, it was produced specifically for a military procurement contract. The contractor specified that the watch should maintain high accuracy at altitudes up to 12,000m / 40,000ft without compensatory pressurization and be resistant to magnetic fields up to 4,800 A/m (about 60 gauss). These demanding specifications make this watch slightly different from other models in the 100ATM range. Additionally, the contract required the watches to be unbranded with a sterile dial.

Specifications

• Movement: Swiss Ronda 715li with a 10-year battery life and hacking function
• Water Resistance: 100atm / 3,280ft / 1000m
• Crown: Screw-down locking
• Helium Escape Valve: Yes
• Dimensions:
  • Width: Including Crown 47mm (Excluding Crown 44mm)
  • Thickness: 18mm
  • Crystal Diameter: 31mm
  • Lug to Lug: 48mm
  • Weight: 132g
• Bezel: Unidirectional non-reflective with ceramic insert
• Crystal Type: Sapphire with Anti-Reflective Coating*
• Case: 316L Stainless Steel
• Illumination: 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 strength and shatter and scratch resistance. These characteristics make it highly appealing to military and security personnel, police officers, and those who lead active outdoor lifestyles. These groups account for over 70% of our customers. Over 90% of cracked crystal incidents involve watches with mineral glass crystals. Even hardened mineral crystals do not match sapphire's durability under adverse conditions. Sapphire crystals are heat-treated to remove internal stresses, enhancing their strength, and are made with two layers of anti-reflective coating. While sapphire crystal is more expensive, it is typically fitted to higher-end watches and is now used in the latest iPhone models.

• Delivery

  • Shipping Information

    Europe, UK, and Rest of World

    Tracked Mail:

    • Europe: €11.50 / £9.99 / US$12.75
    • UK: £9.99 (Small items, e.g., 1 or 2 straps: £5.99)
    • Rest of World: US$22.25 / €20.00 / £17.50

    Express Courier (UPS or FedEx):

    • Europe: €23.00 / £19.99 / US$25.50
    • UK (UPS/DPD): £12.95
    • Rest of World: US$44.50 / €40.00 / £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.

    Order and Shipment Confirmation

    You will generally receive two emails after placing an order:

    1. Confirmation of receipt of the order and payment.
    2. Notification of shipment once the goods are dispatched.

    Processing Time: Orders are shipped by the Post Office or Courier within 48 hours of payment processing. Note that our shipping centers are closed on Saturdays and Sundays; therefore, orders placed during this time may take up to 72 hours to be dispatched. This includes orders placed after 14:00 (CET) on Fridays.

    Estimated Delivery Times (in working days):

    • Europe:
      • UPS: 2 to 5 days
      • Registered Mail: 7 to 14 days
    • UK:
      • DPD or UPS: 24 hours
      • Tracked Mail: 1 to 2 days
    • Rest of World:
      • UPS: 3 to 10 days
      • Registered Mail: 7 to 21 days*

    *Some countries are notoriously slow to process goods on arrival, including Israel, Hong Kong, Macau, Mexico, South Africa, and some South American countries. Significant delays can also occur in other countries in Africa. For time-sensitive deliveries, we recommend using UPS, DHL, or FedEx.

    All shipping estimates exclude Saturdays and Sundays.

    While we strive to deliver within the above timeframes, they are guides, and delivery cannot be guaranteed. We are not responsible for delays caused by couriers or any national postal service. If your goods are not delivered within the estimated time, please contact us at admin@mwc.watch, and we will do our best to resolve the issue promptly. We are not liable for any loss caused by late delivery.

    Our delivery charges cover the cost of shipping to you but do not include import charges and administration fees to clear the goods when entering your country if applicable.

    It is the purchaser's responsibility to understand that charges may be levied and to pay all subsequent import taxes and duties on goods shipped to their country. If items are returned to MWC due to rejected payment, subsequent charges incurred (such as import duty and processing costs) will be deducted from any refund issued. For more information, please contact accounts@mwc-distribution.com.

    We do not accept liability for goods lost after delivery to a PO Box. We reserve the right to cancel orders where the delivery address is a PO Box. Similarly, we do not accept liability for goods lost after confirmed delivery to APO or BFPO locations.

    Customer Notification: It is the customer's responsibility to notify us if goods are not received within 21 days of the estimated delivery date. If no notification is made within this period, the buyer is deemed to have received the goods.

    Safe Place Deliveries

    Some delivery companies allow for delivery without a signature, leaving the item in a "safe place" (e.g., shed, garage, porch). If you choose this option, it is at your own risk. We initially send items by a secure service requiring a signature or proof of delivery. Using a "safe place" increases the risk of theft. We advise ensuring deliveries require a signature to ensure safe receipt.

    Failed Deliveries

    If an item is refused and returned to us, we will refund the order less the outbound and inbound shipping charges once the item is received back at our packing and shipping center. For business locations, please notify the receiving personnel of the expected delivery to avoid refusals. Usually, we will be notified of delivery issues and will email you for instructions. It is important to act quickly to avoid return and associated costs.

    For any questions or further assistance, please contact us at admin@mwc.watch.