The Seamaster Planet Ocean 217.32.42.21.01.002 expands the fourth-generation Planet Ocean line with a blue ceramic bezel variation. The 42 mm stainless steel case features polished and brushed finishing and is fitted with a polished blue ceramic bezel ring that carries a white enamel diving scale. A polished grade 5 titanium inner ring supports the bezel structure and maintains the durability associated with the Planet Ocean series.

The dial maintains the collection’s matte black finish with rhodium plated hands and applied indexes filled with white Super LumiNova. Four open-worked Arabic numerals in white continue the design direction introduced in the 2025 redesign. All transferred text is printed in white to preserve clarity underwater. Inside, the watch is powered by the Co Axial Master Chronometer Calibre 8912, a METAS certified movement known for its anti magnetism, stability and 60 hour power reserve.

This reference is fitted with a black rubber strap anchored to the case by a stainless steel link and secured by a foldover clasp. A screw in casing ring made from polished and brushed grade 5 titanium closes the back of the watch and carries the engraved OMEGA seahorse emblem. The watch measures 13.79 mm in height, 47.50 mm lug to lug and 21 mm between the lugs. Water resistance is rated to 600 meters.