Omega, Speedmaster Professional Moonwatch, reference 310.30.42.50.01.004, hand-wound chronograph. 42 mm steel case, black dial, ceramic tachymeter bezel, steel bracelet. METAS-certified Calibre 3861 manual-winding movement. In very good condition. Height: 47 mm (including lugs), Width: 42 mm (excluding crown), Thickness: 14 mm , Wrist circumference: up to approximately 20 cm. Warranty card, outer and inner boxes.