OMEGA Speedmaster Moonwatch Professional

Omega's Speedmaster Moonwatch Professional 310.55.42.50.02.001 is a chronograph with a 42 mm case in white gold, here Canopus Gold. The case measures 13.33 mm thick with a lug-to-lug of 47.5 mm. A sapphire crystal with anti-reflective treatment covers the dial, and a matching sapphire panel on the reverse shows the movement. Inside is the manual-winding calibre 3861, a Co-Axial chronograph movement certified as a Master Chronometer by METAS and resistant to magnetic fields up to 15,000 gauss, with 50 hours of power reserve. The silver dial has a small seconds subdial and a tachymeter scale, and the piece is set with diamonds. A white gold bracelet closes with a foldover clasp. The case is rated to 50 metres of water resistance.