A8 316L Stainless Steel with Titanium Carbide dark charcoal PVD hard coating. LUM-TEC MDV technology®.Japan Miyota OS10 quartz 12 hour chronograph movement. Black/silver dial. 45mm width excluding crown. 316L Stainless steel case construction. Top side crown and pushers. Thick sapphire crystal. Double side anti-reflective coating. Threaded caseback. Diamond seal crown. 100 meters/330 ft. water resistance. LUM-TEC MDV technology®. Custom molded anti static rubber strap. 26/22 size. Heavy duty Japan Miyota OS10 quartz 12 hour chronograph movement. Free lifetime battery replacement. Limited numbered series. 1 year limited warranty.