Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Black Dial - Black Leather Strap - 131.13.39.20.01.001 Demoiselle caliber 505 SR1 self-winding movement

caliber 505 SR1 self-winding movement with retrograde small seconds at 10 o'clock

which is sure to delight connoisseurs of distinctive watches

engraved with the distinctive fluted pattern

The concealed crown clasp adds a final touch of refinement

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Steel Case - Black Dial - Black Leather Strap - 131.13.39.20.01.001 Demoiselle caliber 505 SR1 self-winding movement39 mm steel case with anti magnetic protection, transparent back, bezel with blackened 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, black leather strap. Water resistant to 50 metres (167 feet).