OMEGA Constellation

Omega's Constellation 131.15.29.20.99.001 is a women's model in steel, measuring 29 mm across. The case stands 12 mm thick with a lug-to-lug span of 31.2 mm, and the purple dial sits under a domed sapphire crystal with antireflective treatment on both sides. Inside is the self-winding calibre 8700, a Master Chronometer certified movement with a Co-Axial escapement and a silicon balance spring, resistant to magnetic fields up to 15,000 gauss. Power reserve runs to 50 hours. The watch is set with diamonds and adds a date function, while a display back shows the movement's Geneva waves in arabesque finish. A steel bracelet closes with a butterfly clasp fitted with a comfort setting. The clasp helps secure the case to its 50 metre water resistance rating.