Sized at 39.5mm across and 14.16mm thick, this stainless steel Planet Ocean wears the hallmarks of a capable diver: a screw-in crown, scratch-resistant sapphire crystal, and a uni-directional rotating bezel engineered to track elapsed dive time. The blue dial sits behind a transparent case back that puts the movement on full display, while a push-button folding clasp with quick micro-adjustment keeps the brushed stainless steel bracelet fitting precisely on the wrist.
Inside runs an automatic Co-Axial Master Chronometer movement that carries COSC certification, meeting strict precision standards. The combination of these technical credentials with a midsize case makes reference 215.30.40.20.03.001 a compelling choice for those who want genuine diving performance without committing to a larger case diameter.
This example is presented in new/unworn condition, complete with the specifications Omega built into the Seamaster Planet Ocean line for demanding underwater environments.
