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 39 mm stainless steel model features a bezel engraved with Roman numerals. a sun-brushed silvery dial and a date window at the 6 o’clock position. The hands. OMEGA logo. Constellation star and indexes are all in 18K white gold. At the heart of this timepiece is the OMEGA Co-Axial Master Chronometer Calibre 8800. visible through the domed scratch-resistant sapphire crystal.