Speedmaster Professional Moonwatch 3861 Sedna Gold / Black / Alligator

The Omega Speedmaster Moonwatch Professional 310.63.42.50.01.001 debuted in 2021 as part of the updated Moonwatch Professional collection and presents the model in Sedna Gold paired with a leather strap configuration. The watch retains the established Moonwatch case architecture while introducing precious-metal execution and contemporary movement technology. The asymmetrical case is crafted from Sedna Gold and measures 42 mm in diameter, with a lug-to-lug length of approximately 47.50 mm and a thickness of about 13.18 mm. It is fitted with a black ceramic bezel insert featuring a tachymeter scale and the traditional dot over 90 detail. Sapphire crystal is used on both the front and the transparent caseback. Water resistance is rated to 5 bar. The black stepped dial follows the fourth-generation Speedmaster design language. It features applied Sedna Gold hour markers and an applied Omega logo, paired with Moonwatch-style hands. The chronograph layout includes a small seconds display, a 30-minute recorder, and a 12-hour recorder, arranged in the characteristic Moonwatch configuration. At the heart of the watch is the manually wound Omega Co-Axial Master Chronometer Calibre 3861. Certified by METAS, the movement operates at a frequency of 3 Hz and offers a power reserve of approximately 50 hours. It features a free-sprung balance with silicon balance spring, enhanced resistance to magnetic fields up to 15,000 gauss, and is visible through the sapphire caseback. This reference is delivered on a black leather strap crafted from calf leather, with calf leather lining on the underside. The strap is secured by a Sedna Gold foldover clasp, completing the precious-metal Moonwatch configuration while maintaining a more restrained aesthetic compared to full-bracelet variants.