Based on the 210.30.44.51.01.001 reference, this replica Diver 300M Chronograph arrives on a black structured rubber strap, with a black ceramic dial and matching black ceramic bezel insert. The chronograph layout places subdials at 6 and 9 o’clock, with a small seconds register and a 12-hour counter respectively. At 44mm in steel, the case commands wrist presence while the integrated lug design prevents it from wearing as large as the diameter suggests.

Technical Overview

• Case diameter: 44mm
• Case material: stainless steel
• Bezel: black ceramic unidirectional with diving scale
• Dial: black ceramic with wave pattern and chronograph subdials
• Crystal: sapphire with anti-reflective treatment
• Strap: black structured rubber with folding clasp
• Water resistance: 300 meters
• Functions: chronograph, date, helium escape valve

The black-on-black combination gives the 210.30.44 a more understated appearance than its blue counterpart. Wave pattern engraving on the ceramic dial is visible only when light hits at certain angles, adding subtle texture without visual noise.

Inside the Movement

Chronograph Seamaster references require a column-wheel mechanism to drive the start, stop, and reset functions. The pushers at 2 and 4 o’clock operate with a crisp feel, and the chronograph seconds hand sweeps from center. The date window sits between 4 and 5 o’clock to avoid interfering with the subdial layout. Omega chose this asymmetric date placement specifically for legibility in the chronograph configuration. Compared to the same reference on the steel bracelet, the rubber version loses the bracelet’s heft and sits closer to the wrist. Both belong to the Seamaster family but attract different style preferences.

What Sets It Apart

Black-dial chronographs have a utilitarian quality that blue or white versions sometimes lack. The monochrome palette here means the wave motif and subdial rings blend together rather than competing for attention. On the wrist, the 44mm case with its brushed flanks and polished bevels provides enough contrast to prevent the watch from looking flat. The helium escape valve at 10 o’clock and the screw-down crown confirm the professional dive specification. This black-dial Seamaster delivers the full Diver 300M chronograph package in the most restrained colour option available, on rubber rather than steel.