OMEGA Constellation

Omega's Constellation 131.20.39.20.58.001 measures 39 mm across in a steel and gold case. Thickness runs to 12.43 mm, with a lug-to-lug of 41 mm. The yellow dial sits under a domed, scratch-resistant sapphire crystal treated for antireflection on both sides. Inside is the self-winding calibre 8800, a Master Chronometer movement certified by METAS and resistant to magnetic fields up to 15,000 gauss, with a free sprung-balance and silicon balance spring giving 55 hours of power reserve. The watch is a chronometer with a date function, set with diamonds, and its display back shows the movement. A steel and gold bracelet closes with a butterfly clasp fitted with a comfort setting. The case carries a 50 metre water resistance rating.