Diving watches must be built to the highest precision requirements to withstand the forces of pressure, and the diver needs a device that can be viewed clearly in low-light conditions. With these factors in mind, Blackhawk designed the Deep Sea Operator Watch, giving you everything you need in a quality timepiece—durability, precision and performance. Meets ISO 6425 water-resistant standards (withstands depths of 300 m) | Finest Miyota quartz movements for extreme accuracy | Constructed of highly corrosion-resistant 316L stainless steel | Case is precision milled for maximum waterproofness | Scratch-resistant sapphire crystal | PVD finish is electrochemically bonded to stainless surface | Screw-down crowns protect inside from moisture and other elements | Standard lug design for easy strap replacement | Billet screw-off case back for simple battery change | Silicone strap resists sweat and chemicals for years | Standard two-year warranty against manufacturing defects Specifications: Case: 316L stainless billet with PVD finish | Movement: Miyota 2415 | Bezel: Unidirectional diving timer | Waterproof: 300 m ISO 6425 | Strap: Molded silicone | Crystal: Sapphire with anti-glare coating | Date: At 4: 30 position | Battery: 3 year Dimensions: Case: 48. 0x56. 0 mm | Crown: 9. 0 mm | Strap: 24. 00 mm