Omega Speedmaster 3597.07 — Pre-owned Speedmaster 3597.07 Wristwatch combines a manual-winding chronograph movement with a black dial and sport design. Condition: Used (very good) — Rank A Used: a few traces of usage; glass, case, bezel, crown, case back and bracelet show insignificant scratches; dial and hands show no deterioration; polished; includes guarantee card; serial number 48**9045. Key attributes: Black | Stainless steel | Manual winding (mechanical) movement | Chronograph complication | Chronograph function | Manual winding movement | Stainless steel bracelet | 42mm case diameter | Black dial | Sport style | Polished case | Dimensions & fit: Regular fit | Composition & care: Stainless steel (case) | Stainless steel (band) | Wipe with a soft cloth; avoid contact with chemicals and strong magnetic fields; service regularly by a qualified watchmaker.