OMEGA Speedmaster Moonwatch Professional

Omega's Speedmaster Moonwatch Professional 310.23.42.50.99.001 is a chronograph with a 42 mm case in steel and Sedna gold. It measures 13.18 mm thick with a lug-to-lug of 47.5 mm, and the pink dial sits under a scratch-resistant sapphire crystal with anti-reflective treatment inside. The manual-winding calibre 3861 drives it, a Co-Axial movement certified as a Master Chronometer by METAS and resistant to magnetic fields up to 15,000 gauss. Power reserve runs to 50 hours. Beyond timing functions the watch carries a tachymeter scale and small seconds, and the case has a transparent back that shows the movement. It comes on a black alligator leather strap with a calf leather lining, closed by a steel foldover clasp. Water resistance is modest here: the case is rated to 50 metres.