Omega Speedmaster '57 Omega Co-Axial Chronograph Watch - 41.5 mm Steel Case - Brushed Bezel - Black Dial - 331.10.42.51.01.001 Release 36mm Everose Rolesor case with

36mm Everose Rolesor case with Oystersteel monobloc middle case

30-minute counter at 3 o'clock

Rolex calibre 3285 self-winding movement with second time-zone hour hand and instantaneous date

Water resistant to 600 m (2000 ft)

Omega Speedmaster '57 Omega Co-Axial Chronograph Watch - 41.5 mm Steel Case - Brushed Bezel - Black Dial - 331.10.42.51.01.001 Release 36mm Everose Rolesor case with41. 5 mm stainless steel case, transparent back, brushed bezel with with tachymeter scale, scratch resistant sapphire crystal with anti reflective treatment on both sides, black dial, self winding chronometer Omega 9300 movement with Co Axial Escapement, chronograph, date, and small seconds, approximately 60 hours of power reserve, stainless steel bracelet. Water resistant to 100 m.