OMEGA Constellation

The Omega Constellation reference 131.23.41.21.03.001 has a 41 mm case in steel and gold. The case is 13.45 mm thick and 44 mm from lug to lug. Calibre 8900 is a self-winding movement with a Co-Axial escapement and a power reserve of 60 hours. The calibre is certified Master Chronometer, approved by METAS and resistant to magnetic fields reaching 15,000 gauss. A domed sapphire crystal with anti-reflective treatment on both sides covers the blue dial, which has a date window at 6 o'clock. The Constellation has a display back. Omega rates the case to 50 metres, or 5 bar. A blue leather strap with rubber lining is fitted to the watch.