Omega Speedmaster 38 Co-Axial Chronograph Watch - 38 mm Steel And Yellow Gold Case - Dual Diamond Bezel - Silvery Dial - Green Leather Strap - 324.28.38.50.02.001 39 3 mm 18K 5N gold

3 mm 18K 5N gold case

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

unidirectional rotating bezel with scratch-resistant ceramic Cerachrom insert and platinum coated 60-minute graduations and numerals

41 mm 18K yellow gold case

Omega Speedmaster 38 Co-Axial Chronograph Watch - 38 mm Steel And Yellow Gold Case - Dual Diamond Bezel - Silvery Dial - Green Leather Strap - 324.28.38.50.02.001 39 3 mm 18K 5N gold38 mm stainless steel and 18K yellow gold case, dual bezel with a tachymeter scale on a green aluminium ring while the outside is diamond paved, scratch resistant sapphire crystal anti reflective treatment on both sides, opaline silvery dial includes horizontal oval subdials and a vertical oval date window at 6 oclock, tachymeter scale, Caliber Omega 3330 self winding movement with chronograph, chronometer, date, approximately 52 hours of power