OMEGA Constellation

Omega's Constellation 131.12.41.21.06.001 comes in a 41 mm steel case with a grey dial. The case measures 13.45 mm thick and 44 mm lug to lug, and the dial sits under a domed sapphire crystal with antireflective treatment on both sides. Inside is the self-winding calibre 8900, a Co-Axial Master Chronometer movement certified by METAS and resistant to magnetic fields of 15,000 gauss, with a free sprung-balance and silicon hairspring. Power reserve runs to 60 hours. The movement also carries a time zone function alongside the date, and a display back shows off the rhodium-plated rotor and bridges finished with Geneva waves in arabesque. A black rubber strap closes with a steel foldover clasp. That clasp secures a case rated to 50 metres of water resistance.