Omega Co-Axial 3861

Omega's Master Chronometer hand-wound chronograph caliber powering the modern Speedmaster Professional Moonwatch. Certified to METAS standards with resistance to 15,000 gauss magnetic fields. The Co-Axial escapement reduces friction and extends service intervals, while the 50-hour power reserve improves on the legendary 1861 it replaced. Carries the heritage of the only watch worn on the Moon.