OMEGA SPEEDMASTER MOONWATCH PROFESSIONAL Omega, Speedmaster Moonwatch Professional, Co-axial Master Chronometer, Ref. 310.30.42.50.01.002, movement and case no. 83529810, sold in 2022 A superb and attractive, full-set, water-resistant, stainless steel, hand wound, tonneau-shaped, certified chronometer, chronograph wristwatch with matte black dial, applied Omega logo, painted luminous indexes, luminous hands, 12-hour and 30-minute registers, tachymeter scale, stainless steel Omega bracelet with secured deployant clasp. Fitted with a Cal. 3861, mechanical, manual winding, rhodium plated, certified master chronometer, 26 jewels, co-axial escapement, Si14 silicon balance spring, four-arm monometallic balance, shock-absorbers, hack mechanism, sapphire-set screwed case back, round chronograph pushers, sapphire crystal, crown and pushers guard, black bezel bearing the tachymeter scale. Dial, case and movement signed. Diam. 42 mm. Thickness 13,40 mm. Wrist circumference approx. 185 mm. Accompanied by a fitted presentation box with outer packaging, user manual, guarantee card dated January 2022, Master Chronometer card, Pictograms card, legendary Moonwatch booklet.