Omega Seamaster Planet Ocean Chronograph – Ref. 2210.50.00 Professional 45.5 mm diver’s chronograph powered by Omega Caliber 3313 (Co-Axial Chronograph) with COSC-certified chronometer precision. Features Co-Axial escapement, 28,800 vph (4 Hz) frequency, 52-hour power reserve, and is based on the F. Piguet 1285 calibre, modified by Omega. Comes in the original case, bracelet fits 20.5 cm, no papers included. The watch was serviced in February 2026 by Adrian Rotariu, with supporting documentation. It is in very good condition, showing normal signs of wear. A robust and elegant sport-luxury timepiece, ideal for collectors or daily wear.