Omega Seamaster Planet Ocean 600m Watch, 45.5mm Gray Dial, 215.32.46.51.01.004nspired by OMEGAs maritime legacy, the Seamaster Planet Ocean was launched in 2005. Today, the collection continues to pay homage to the brands dive watch heritage, with updated style and advanced precision. For this chronograph model, the 45. 50 mm case is crafted in brushed stainless steel and features pushers with brushed black ceramic rings. There is also a brushed black ceramic bezel ring with its diving scale in Liquidmetal. The dial is