MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch in a Titanium Case with Luminova and a Helium Valve, Swiss Quartz Movement with a Ten Year Battery Life 24mm NATO strap Synthetic sapphire is the best

Synthetic sapphire is the best material for watch crystals because of its exceptional strength and resistance to shattering and scratching

and extreme environments such as inflatable craft and offshore deployments

Various manufacturers like Elgin

Water Resistance: 10 ATM (100m/330ft)

and a shatter and scratch-resistant sapphire crystal

MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch in a Titanium Case with Luminova and a Helium Valve, Swiss Quartz Movement with a Ten Year Battery Life 24mm NATO strap Synthetic sapphire is the bestSKU: T100AT 12 ST QZ The MWC Titanium Depthmaster is our latest heavy duty professional dive watch and is engineered for extreme environments. Designed around real operational requirements rather than cosmetic dive styling, this model combines 100ATM (1000m 3,280ft) water resistance, a sapphire crystal, ceramic bezel and Luminova for first rate night time performance. Unlike many oversized dive watches, the Depthmaster is built to remain wearable for