Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Yellow Gold Case - Champagne Dial - 131.50.39.20.08.001 Oyster while the watch's features include

while the watch's features include a screw-down crown and a solid case back

Delivered in a special presentation box along with an additional black rubber strap

18K white gold end pieces

featuring 31 jewels and operating at 28

Arabic numerals

Omega Constellation OMEGA Co-Axial Master Chronometer - 39 mm Yellow Gold Case - Champagne Dial - 131.50.39.20.08.001 Oyster while the watch's features include39 mm yellow gold 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 champagne dial with date at 6 oclock, Calibre Omega 8801 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, yellow gold bracelet. Water resistant to 50 metres (167 feet).