Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Black Dial - 131.10.39.20.01.001 La black rotating inner bezel with

black rotating inner bezel with diving scale and zone from 60 to 15 minutes in green

Caliber: CRMT1

18K Everose gold screw-down crown with twinlock double waterproofness system

12-zone silvered flinque guilloche dial with lacquered sunray effect and blued-steel sword-shaped hands

black monobloc Cerachrom bezel with engraved tachymetric scale

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Black Dial - 131.10.39.20.01.001 La black rotating inner bezel with39 mm steel case with anti magnetic protection, transparent back, bezel engraved with Roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, sun brushed black dial with date at 6 oclock, Calibre Omega 8800 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, steel bracelet. Water resistant to 50 metres (167 feet).