OMEGA Speedmaster 38

Omega's Speedmaster 38, reference 324.63.38.50.02.004, is a chronograph cased in yellow gold at 38 mm across. The case measures 14.7 mm thick with a lug-to-lug span of 44.9 mm, and the lugs take an 18 mm strap. A sapphire crystal with anti-reflective treatment on both sides covers the silver dial. Inside is the self-winding calibre 3330, a column-wheel chronograph movement with Co-Axial escapement and a 52-hour power reserve, certified as a chronometer. The dial adds a date window, small seconds and a tachymeter scale alongside the chronograph function. Omega fits it to a green alligator leather strap with a yellow gold foldover clasp. The case holds a 100 metre water resistance rating.