Built around the 210.20.42.20.01.001 reference, this replica Seamaster 210204 42mm combines steel and sedna gold in the time-only Diver 300M configuration. The black dial paired with warm gold accents creates a tonal contrast that makes this two-tone variant one of the more versatile pieces in the current Seamaster range. Omega positions the 210.20 references between the entry-level full-steel models and the solid-gold dress divers, and this particular combination of black and gold has historically been the best-selling two-tone option.

Technical Overview

• Case diameter: 42mm
• Case material: stainless steel with sedna gold accents
• Bezel: ceramic with sedna gold diving scale markings
• Crystal: domed sapphire, anti-reflective on both sides
• Dial: black ceramic wave pattern, gold-toned hands and indices
• Bracelet: steel and sedna gold with adjustable clasp
• Functions: hours, minutes, seconds, date

The black-and-gold pairing allows the gold elements to stand out more sharply than they do against a blue or green background. Each applied index and each hand catches light independently against the matte-finish black ceramic surface.

Inside the Movement

The automatic caliber in this reference uses the same co-axial escapement and free-sprung balance found across the Diver 300M time-only range. Power reserve sits in the 55-hour window. The silicon hairspring provides magnetic resistance up to 15,000 gauss, which means everyday exposure to phones, tablets, and laptop speakers will not affect timekeeping. The sapphire caseback reveals the movement finishing, including Geneva waves on the bridges and a sedna-gold-colored rotor. To see how the two-tone treatment works with a blue dial instead, look at the gold bezel 210.20.42.20.01.002 alongside this model in the Seamaster collection.

What Sets It Apart

Black-and-gold is the most conservative two-tone combination in the Diver 300M family. It works with suits, with casual wear, and with dive gear. The gold does not overwhelm the design because it occupies only the accent surfaces: bezel ring, crown, hands, indices, and bracelet center links. Everything structural remains steel. That balance keeps the watch grounded in tool-watch territory while the gold elevates it beyond a pure sport piece. Buyers cross-shopping between the full-steel black Seamaster and this version are choosing between subtlety and presence. This replica Seamaster 210204 42mm adds warmth and material contrast without losing any of the Diver 300M functionality.