Omega Seamaster Diver 300M 210.22.42.20.03.002

The Seamaster Diver 300M has been part of Omega's lineup since 1993, and this reference pairs the modern 42mm case with a two-tone build in stainless steel and 18K Sedna gold. A blue ceramic dial with a laser-engraved wave pattern sits under a unidirectional blue ceramic bezel with a Ceragold dive scale. The blue rubber strap completes a sporty look with real dressy appeal.

The case is 42mm across and about 13.6mm thick. It has screw-down Sedna gold crowns, a helium escape valve, a sapphire crystal and a sapphire exhibition caseback. The dial carries a date window at 6 o'clock. The skeleton hands and applied indexes are Sedna gold filled with white Super-LumiNova. Inside is the Omega Co-Axial Master Chronometer Caliber 8800, a self-winding movement with a silicon balance spring and a 55 hour power reserve. It is METAS certified and resistant to magnetic fields up to 15,000 gauss. Water resistance is 300 meters (1,000 feet). The 20mm blue rubber strap closes on a stainless steel tang buckle.

This is a pre-owned example from 2025 and comes with its box and papers.