OMEGA Speedmaster Moonwatch Professional

Omega's Speedmaster Moonwatch Professional, reference 310.60.42.50.10.001, comes in a 42 mm Moonshine gold case, a chronograph built for the wrist rather than the vitrine. The case measures 13.18 mm thick with a lug-to-lug span of 47.46 mm and pairs with a green dial. Inside is the manual-winding calibre 3861, a Co-Axial escapement movement certified as a Master Chronometer and resistant to magnetic fields up to 15,000 gauss, with a 50-hour power reserve. A sapphire crystal with anti-reflective treatment covers the dial, and a matching sapphire panel on the back shows the movement. The tachymeter scale and small seconds sit alongside the chronograph function on the dial. Moonshine gold links close with a foldover clasp in the same metal. The case holds a 50 metre water resistance rating.