The Seamaster Planet Ocean 217.30.42.21.01.002 features the updated fourth-generation design of OMEGA’s professional dive collection. The 42 mm stainless steel case is finished in polished and brushed surfaces and paired with a polished blue ceramic bezel ring that includes a white enamel diving scale. A polished grade 5 titanium inner ring stabilises the bezel assembly and reinforces the structural design.

The matte black dial uses rhodium plated hands and applied indexes filled with white Super-LumiNova. Four open worked Arabic numerals in white reflect the redesigned layout introduced in the latest Planet Ocean generation. All transferred dial text is rendered in white for clarity. The watch is powered by the Co-Axial Master Chronometer Calibre 8912, a METAS-certified movement offering a 60 hour power reserve and resistance to magnetic fields up to 15,000 gauss.

This reference is fitted with a polished and brushed stainless steel bracelet featuring the extendable foldover rack and pusher clasp with an additional diver extension. A polished and brushed grade 5 titanium screw in casing ring closes the watch and carries the OMEGA seahorse emblem. The watch measures 13.79 mm in height, 47.50 mm lug to lug and 21 mm between the lugs, with water resistance to 600 meters.