Omega Seamaster Diver 300 M Co-Axial Chronograph Watch - 41.5 mm Steel Case - Blue Unidirectional Bezel - Blue Dial - 212.30.42.50.03.001 Brilliant-Cut 7 mm stainless steel and

7 mm stainless steel and 18K red gold case

white opaline-silvery dial with diamond indexes and a unique silk-like pattern inspired by several Constellation models produced in the 1960s

33mm steel case

38 mm brushed stainless steel and 18K red gold case

white dial

Omega Seamaster Diver 300 M Co-Axial Chronograph Watch - 41.5 mm Steel Case - Blue Unidirectional Bezel - Blue Dial - 212.30.42.50.03.001 Brilliant-Cut 7 mm stainless steel and41. 5 mm stainless steel case, screw in crown, blue unidirectional rotating bezel, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, blue dial, self winding chronometer Omega 3330 movement with chronograph, small seconds, and date, approximately 52 hours of power reserve, stainless steel bracelet. Water resistant to 300 m.