Omega Seamaster Diver 300 M Co-Axial Chronograph Watch - 44 mm Steel Case - Unidirectional Bezel - Black Dial - 212.30.44.50.01.002 Strap" bezel is in 18K yellow

bezel is in 18K yellow gold

bezel with blackened Roman numerals

folding buckle

this model features an opaline and blue dial with a steel bracelet

Omega Seamaster Diver 300 M Co-Axial Chronograph Watch - 44 mm Steel Case - Unidirectional Bezel - Black Dial - 212.30.44.50.01.002 Strap" bezel is in 18K yellow44 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.