LIV GX1 Stealth Gray 1240.45.111.SRB600 Features precision 13 Jewel Gold Plated Swiss Quartz Movement (RONDA startech Caliber 5040.D); Powered by a battery Screw-down crown and caseback Scratch resistant and anti-reflective sapphire crystal on the front of the watch Water resistant to 300 meters (1000 feet) 316L stainless steel case with black IP coating; 3-dimensional multilayered black dial with gray numbers; Date function; Individual serial number on the back of the watch