Item Details 100 Feet Water Resistance Integrated Carabiner Clip Japan Quartz Movement L.E.D. Microlight Luminescent Hands and Hour Markers Military Dial Mineral Glass Crystal Stainless Steel Caseback SR626 Battery This bad boy boasts a mineral glass crystal that's set 2mm below a raised aluminum guard. That means it can take a beating and keep on ticking. And if you're really rough on your watches, we've got you covered. The Cage, made of solid cast aluminum, is there to protect the crystal from even the most serious damage.