Omega Seamaster Diver 300 M Co-Axial Chronograph Watch - 44 mm Steel Case - Unidirectional Bezel - Black Dial - 212.30.44.50.01.002 Strap" caliber 8520 self-winding movement with

caliber 8520 self-winding movement with date window at 3 o'clock

bezel with blackened Roman numerals

Caliber Omega 8520 self winding movement with co-axial escapement

caliber 8806 self-winding Co-Axial master chronometer movement

bezel is in 18K yellow gold

Omega Seamaster Diver 300 M Co-Axial Chronograph Watch - 44 mm Steel Case - Unidirectional Bezel - Black Dial - 212.30.44.50.01.002 Strap" caliber 8520 self-winding movement with44 mm stainless steel case with helium escape valve, screw in crown, unidirectional rotating bezel with black ceramic insert, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, black dial with yellow accents, self winding chronometer Omega 3330 movement with Co Axial Escapement, chronograph, small seconds, and date, approximately 52 hours of power reserve, stainless steel bracelet. Water resistant to 300 m.