The OMEGA 131.25.29.20.55.001 Constellation watch combines a 29mm round shaped stainless steel and 18k Sedna gold case and bracelet with a push button clasp. It has a mother of pearl analogue dial with a date display, diamond hour markers, and 18k Sedna gold Super-LumiNova filled hands, all of which is protected beneath domed scratch resistant sapphire crystal glass with an anti-reflective treatment on both sides. Power is generated by the Co-Axial Master Chronometer Calibre 8700 automatic movement with 28 jewels and a power reserve of up to 50 hours. This model also has a diamond set bezel, a transparent case back, and a water resistance of up to 50 metres. - Please Note: This is an ex-display watch. There is a small mark on the back of the bracelet strap, please see second image. • Powered by the chronometer certified automatic movement. • Presented on a two colour stainless steel bracelet . • Scratch resistant sapphire crystal glass. • 29mm case width. • 50 metre water resistance.