Omega Seamaster Diver 300M 42mm Black Sedna Gold Super Clone

The Omega Seamaster Diver 300M 210.20.42.20.01.001 pairs a polished black ceramic dial with laser-engraved waves and 18K Sedna gold details. It comes on a two-tone stainless steel and 18K Sedna gold bracelet.

The genuine watch

The genuine 210.20.42.20.01.001 measures 42 mm and uses a stainless steel and 18K Sedna gold case. The black ceramic bezel carries a Ceragold diving scale, and the domed sapphire crystal has anti-reflective treatment on both sides. It runs on the OMEGA Master Chronometer Calibre 8800, which resists magnetic fields greater than 1.5 tesla (15,000 gauss). Water resistance is rated to 300 metres (30 bar).

Factory notes

The r/RepTime Who Makes the Best guide (May 2026) ranks VSF as the best factory for the Seamaster Diver 300M with a Clone 8800 movement. VSF carries a Super Rep tier rating for this version. Ask us which factory version is available before you pay.

Check on your watch

• The laser-engraved wave pattern on the black ceramic dial.
• The 18K Sedna gold skeleton hands and raised indexes.
• The date window at 6 o'clock.
• The conical helium escape valve.

Before your watch ships, we film it and send you the video. This watch carries a 2-year limited warranty covering defects in manufacture and faults that appear in normal wear.