23+ Omega Seamaster Professional Planet Ocean 300M US. Then tried on the po 43.5mm. The omega seamaster planet ocean 600m is a diving watch for professional and recreational divers alike.
Discover the new look of an omega icon!
Discover all seamaster 300m models now! Discover the seamaster diver 300m chronograph collection. The clasp contains the diver's extension mechanism for temporarily expanding the band to fit over a wet suit; Bonus pic of my seamaster professional which was my first proper watch i bought 6 years ago when i was 18.