The 233.30.41.21.01.001 reference makes this replica Seamaster 300 one of the more classically styled entries in the family. A black dial with applied hour markers sits inside a 41mm steel case, keeping proportions balanced between sport and dress. The ceramic bezel ring rotates unidirectionally with a luminous dot at 12, and the overall package carries the tool-watch DNA that Omega built into every modern Seamaster 300 without the bulk of larger references.

Technical Overview

• Case diameter: 41mm
• Case material: stainless steel
• Bezel: black ceramic unidirectional
• Dial: black with luminous applied indices
• Crystal: sapphire with AR coating
• Bracelet: stainless steel with folding clasp
• Water resistance rating: 600 meters
• Functions: hours, minutes, seconds, date

Omega rates this reference to 600 metres, and the case construction uses a screw-in caseback and helium escape valve to support that figure.

Inside the Movement

At 41mm the 233.30 sits comfortably on most wrist sizes, making it the go-to Seamaster 300 for anyone who finds the collection’s bigger dive cases too large. The black dial keeps legibility straightforward with a date window at 3 o’clock and broad arrow-style hands. Compared to the Planet Ocean Deep Black 215.92.46.22.01.001, which builds its whole case from ceramic and carries GMT on a rubber strap, this model stays with steel, a bracelet and a plain date. Both live within the Seamaster collection, but reach that dark aesthetic through different materials.

What Sets It Apart

Black-dial Seamaster references outnumber any other dial color in the lineup, yet the 233.30 distinguishes itself through proportions. The 41mm case with 600m depth rating occupies a niche between the dress-oriented Aqua Terra and the oversized Planet Ocean chronographs. For daily rotation, it works equally well under a shirt cuff or over a wetsuit. This 41mm black-dial super clone captures that crossover versatility in a package that does not demand attention but earns it through execution.