Omega Speedmaster Professional Moonwatch Co-Axial Master Chronometer 42mm

Omega 310.30.42.50.01.002 Speedmaster Professional Moonwatch Co-Axial Master Chronometer 42mm.  This Omega watch features a brushed and polished stainless steel case with a polished stainless steel crown and buttons. It has a black anodized aluminum bezel ring that includes a tachymeter scale, highlighted by the iconic dot over 90 (often referred to as "DON"). The matte black dial is designed with a double step—featuring a raised perimeter and lowered sub-dials. It showcases luminous white hands, luminous painted index hour markers, and finely printed minutes, seconds, and fractions of a second markers. The watch includes a small continuous running seconds sub-dial at 9 o'clock and chronograph functions with a large central seconds counter, a 30-minute counter at 3 o'clock, and a 12-hour counter at 6 o'clock. Powered by the Omega caliber 3861, which beats at 21,600 vph and features 26 jewels, it has a power reserve of approximately 50 hours. This model is METAS Certified Master-Chronometer, meaning it has passed rigorous tests for water resistance, precision, and magnetic resistance, making it resistant to magnetic fields over 15,000 gauss, and incorporates a silicon balance spring and co-axial escapement for enhanced performance.