Premier watch. Self-winding mechanical. Approximately 48 hrs .Chronograph 1/4th second,30minutes.Vibration 28,800 v.p.h with 26 jewels and calendar, Day, date, month & moon-phase. Case material Stainless Steel. Caseback Screwed in(sapphire crystal). Water resistance100 m (330 ft)Bezel Fixed .Crown Non screw-locked, two gaskets Crystal Cambered sapphire, glareproofed both sides. Copper dial with brown leather strap and a folding clasp.