Omega Speedmaster Pro 3573.50 Stainless Steel Manual Winding 。Brand OMEGA Model Speedmaster Professional Gender Men\'s Material Stainless Steel / Stainless Steel Dial color black Movement Hand Winding Ref Number 3573.50 Serial Number 77106*** Functions Chronograph、Small seconds Accessories No accessories Case size About 42mm (1.7inch) (not including the crown) Wrist size About 18cm (7.1 inch) Lugs width 20mm(0.8 inch) Keeping time +17 sec/day(measured value)　※Reference value State of the wound Glass a few scratch, Small hit Scratch Case Light scratch, small wound, dent Bezel some light scratch, small wound Belt/Bracelet some light scratch, small wound Hand Light damage, Stains, Discolors Dial Light damage, Stains Buckle Light scratch, small wound CL Number 958704　 420 260601 MD Condition Rank Body rank B+ Belt/Bracelet rank B+ Condition RANK Explanation N [Mint] Item has never been used. S [Beautiful] Item is like new withvery slight signs of use. A [Excellent] Item has clearly been used,but has no significant scratches or wear. AB [Great] Item has slight surface scratches or slight wear,but looks great. B [Good] Item shows scratches or wear that is visible when worn on wrist. BC [Fair] Item is not in perfect working order or slightly damaged. C [Poor] Item cannot be used as-is.Repair needed or used as parts