Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Tally- Ruthenium-Grey Dial - Blue Leather Strap - 131.13.39.20.06.002 5410 including the iconic fluted bezel

including the iconic fluted bezel

caliber 9300 self-winding movement with chronograph function

unidirectional ratcheted rotating bezel

it complements the watch's aesthetic appeal seamlessly

rhodiumized 18K white gold double adjustable folding buckle

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Tally- Ruthenium-Grey Dial - Blue Leather Strap - 131.13.39.20.06.002 5410 including the iconic fluted bezel39 mm steel case with anti magnetic protection, transparent back, bezel with blued Roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, tally brushed ruthenium grey dial with date at 6 oclock, Calibre Omega 8800 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, blue leather strap. Water resistant to 50 metres (167 feet).