MWC "Depthmaster" Military Divers Watch – 100ATM / 3,280ft / 1000m Water Resistant, PVD Stainless Steel Case with Helium Valve (Quartz) Titanium General Service Watches - 300m Water Resistant The factory-rated accuracy is +/-20

The factory-rated accuracy is +/-20 seconds per month

Although sapphire crystal comes at a higher price

Design: Black carbon fiber effect with sealed straight edges and contrasting white stitching for a sophisticated look

These properties make it particularly suitable for military personnel

Instead of the Tritium used in the 1960s

MWC "Depthmaster" Military Divers Watch – 100ATM / 3,280ft / 1000m Water Resistant, PVD Stainless Steel Case with Helium Valve (Quartz) Titanium General Service Watches - 300m Water Resistant The factory-rated accuracy is +/-20SKU: 100ATM 1224 PVD QZ The MWC "Depthmaster" range of Military Diver models represents MWC's latest heavy duty collection. 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 that is easier to grip in extreme cold.