217.30.42.21.01.001Ref

Unveiled in 2025, the Omega Seamaster Planet Ocean 600M 42 mm ref. 217.30.42.21.01.001 has a polished/brushed stainless steel 42mm case, flat sapphire crystal with double-side AR coating, and 600m/60bar water resistance. The screw-in grade 5 titanium caseback shows the seahorse; a polished black ceramic bezel with white enamel dive scale and a grade 5 titanium inner ring surrounds the matte black dial with rhodium-plated hands/indexes, white Super-LumiNova, and four applied Arabic numerals, and there is no date window. Inside is the METAS-certified Co-Axial Master Chronometer caliber 8912 (3.5Hz, ~60h power reserve, twin barrels, free-sprung silicon balance), paired with a steel bracelet and an extendable rack-and-pusher clasp with diver extension.