This Omega is 55 x 48 mm titanium case with helium escape valve, transparent back, bi-directional rotating bezel ring, flat scratch-resistant sapphire crystal anti-reflective treatment on both sides, grade 5 titanium dial with varnished orange and white hands, Caliber Omega 8912 self winding movement with co-axial escapement, chronometer, approximately 60 hours of power reserve, titanium bracelet. Water resistant to 120 bar (1200 metres / 4000 feet). Comes with additional grey color rubber strap.