OMEGA Constellation

Omega's Constellation ref. 131.30.41.21.04.001 is a men's steel model measuring 41 mm across. The case stands 13.5 mm thick with a 44 mm lug-to-lug span, and the white dial sits under a domed sapphire crystal with antireflective treatment on both sides. Inside is the self-winding calibre 8900, a Co-Axial movement certified as a Master Chronometer by METAS and resistant to magnetic fields up to 15,000 gauss. Two barrels mounted in series give 60 hours of power reserve. The watch adds a date function and a time zone display, and the transparent caseback shows the rhodium-plated rotor and Geneva waves finishing. A steel bracelet closes with a foldover butterfly clasp. Water resistance is rated to 50 metres.