Omega Speedmaster Professional Moonwatch Calibre 1861 Full Set Just Serviced by Omega, 3570.50.00

Omega Speedmaster Professional Moonwatch 3570.50.00. Full Omega service completed August 2026, warranty through August 2028. Service invoice with serial and service numbers ships with the watch. Full set: original box and papers. Excellent condition. At its heart is Omega’s mechanical calibre 1861, the famous manual-winding movement directly descended from the calibre worn on the Moon, behind the Hesalite crystal NASA specified for spaceflight.