The dramatic and enduring design of the OMEGA Constellation is characterised by its famous half-moons,clawson the case and mono-rang bracelet. This 28 mm 18K yellow gold and stainless steel model features a bezel engraved with Roman numerals, crystal white silvery dial and scratch-resistant sapphire crystal. The hands, OMEGA logo, Constellation star and indexes are also in 18K yellow gold. At the heart of this timepiece is the OMEGA Calibre 4061, while the caseback is stamped with the Constellation Observatory medallion. Calibre Omega 4061: Quartz movement with "Long Life" feature to maximize the autonomy of the battery. Exclusive red OMEGA logo with rhodium plated parts and circular graining. TECHNICAL DATABetween lugs17. 5mm Bracelet Steel - Yellow gold Case Steel - Yellow gold Case diameter28mm Dial Black Crystal Domed scratch?resistant sapphire crystal with anti?reflective treatment on both sides Water resistance30 Metres