The dramatic and enduring design of the OMEGA Constellation is characterised by its famous half-moons, claws on the case and mono-rang bracelet.This 36 mm stainless steel and 18K yellow gold model features a bezel engraved with Roman numerals, silk-embossed champagne dial and a date window at the 6 o'clock position. The hands, OMEGA logo, Constellation star and indexes are all in 18K yellow gold.At the heart of this timepiece is the OMEGA Calibre 4564, which sits behind the brushed caseback with its embossed Constellation Observatory medallion.