42mm 316L Surgical grade Stainless Steel case SII VK67 Mecha-Quartz movement with: Date display 12 hour chrono sub-dial 60min chrono sub dial Sweeping 1/5 chrono seconds hand Continuous seconds hand Thick slightly curved sapphire Military grade double anti-reflective coating. Solid 316L stainless steel caseback High tech Viton® gaskets 100 meters water resistance Custom molded 24/22 anti-static rubber strap MDV luminous technology on dial and hands Threaded crown Free lifetime battery replacement and pressure testing Two year limited warranty Limited numbered series of 200 worldwide