IWC Aquatimer Automatic Watch . Caliber 30110 automatic movement, Stainless steel bracelet with push button release safety clasp, Stainless steel case, Black dial with indexes, Power reserve to 42 hours, Center seconds with stop function, Date indicator at 3 o'clock position, Mechanical rotating inner bezel, screw in crown, Sapphire glass, coated on both sides, Water resistant to 1000 meters, Case diameter: 42 mm. # 3548-005 #.