OMEGA Constellation

The Omega Constellation 131.25.29.20.52.001 measures 29 mm in steel and Sedna gold, with a case 12 mm thick and 31.2 mm lug to lug. The silver dial sits under a domed sapphire crystal treated with anti-reflective coating on both sides. Inside is the self-winding calibre 8700, a Master Chronometer movement certified by METAS with a free sprung-balance and silicon balance spring, resistant to magnetic fields up to 15,000 gauss. Power reserve runs to 50 hours. The watch carries a date function and is set with diamonds, and a transparent caseback shows the movement. It is fitted to a matching steel and Sedna gold bracelet secured by a butterfly clasp with comfort setting. The case holds a water resistance rating of 50 metres.