Omega Speedmaster Professional Moonwatch Co-Axial Master Chronometer 42mm

Omega 310.63.42.50.10.001 Speedmaster Professional Moonwatch Co-Axial Master Chronometer 42mm.  The Omega watch features a refined brushed and polished 18kt Moonshine gold case, complemented by a polished Moonshine gold crown and buttons. Its green ceramic bezel, marked by the iconic tachymeter scale with the 'dot over 90' (DON), surrounds a sun-brushed green PVD dial with a double-stepped design. Gold hands with luminous fill and applied blackened index hour markers with luminous tips ensure readability, with a small seconds sub-dial at 9 o'clock. The chronograph includes a large central seconds counter, a 30-minute counter at 3 o'clock, and a 12-hour counter at 6 o'clock. Driven by the Omega caliber 3861, this timepiece beats at 21,600 vph (3Hz), has 26 jewels, and a 50-hour power reserve. Certified as a METAS Master Chronometer, it meets rigorous standards for water resistance, precision, and magnetic resistance up to 15,000 gauss, bolstered by its silicon balance spring and co-axial escapement for enhanced durability.