Omega Speedmaster Calibre 321 Chronograph 39.7mm Stainless Steel Black Dial Bracelet 311.30.40.30.01.001 - BRAND NEW Omega Speedmaster Calibre 321 Chronograph 39.7mm Stainless…

The Omega Speedmaster Calibre 321 ref. 311.30.40.30.01.001 stands as one of the most consequential modern Speedmaster releases in the collection's six-decade history. When Omega reintroduced the Calibre 321 in 2020, it was more than a nostalgia exercise: it was a full technical resurrection of the column-wheel, lateral-clutch chronograph movement that powered the original CK 2915 and CK 2998 Speedmasters, and the very calibre that accompanied astronauts to the Moon aboard Apollo missions. For collectors and enthusiasts searching for a buy Omega Speedmaster Calibre 321 online, this reference represents the purest expression of that storied legacy available in brand-new condition.

The case measures 39.7mm in diameter — a number chosen with deliberate historical precision to replicate the proportions of the early references worn by NASA crews. Crafted entirely in stainless steel, the case carries the hallmark asymmetric Speedmaster lug architecture with the crown and pushers protected on the right flank. At 39.7mm, this Speedmaster sits closer to a classic tool-watch diameter than many contemporary chronographs, lending it an understated authority on the wrist that larger modern pieces cannot replicate.

The black index dial is rendered with the same period-correct architecture that defined the original Moonwatch aesthetic: applied indices rather than printed markers, a clean tricompax subdial layout, and the iconic tachymeter scale migrated to the ceramic bezel. The ceramic bezel is both a nod to Omega's modern material expertise and a practical upgrade over the aluminum bezels of vintage pieces, offering superior scratch resistance and long-term color stability. Together, the black dial and ceramic bezel create a visual tension — matte depth against the case's polished and brushed steel surfaces — that is unmistakably Speedmaster.

The heartbeat of this reference is the manually wound Calibre 321 itself. Omega rebuilt this movement from archival drawings and period examples, retaining the signature column wheel that governs chronograph engagement and the lateral clutch that ensures smooth start-stop operation with no interference to the running seconds hand. The result is a chronograph mechanism widely regarded among horological enthusiasts as one of the finest ever conceived, now produced to contemporary tolerances and decorated to Omega's modern finishing standards. Winding the crown and hearing the tactile, precise action of the Calibre 321 is a sensory experience that modern-era Speedmasters powered by later calibres simply cannot offer.

On the wrist, the 311.30.40.30.01.001 delivers a presence that is simultaneously vintage and contemporary. The integrated stainless steel bracelet — a faithful recreation of the period "bracelet" style — gives the watch a cohesive, solid feel that sits flush with the case and tapers elegantly toward the clasp. Whether dressed for a formal occasion or worn as an everyday statement piece, the Speedmaster Calibre 321 transcends categorical boundaries in a way that few modern watches achieve. Its 39.7mm footprint suits a broad range of wrist sizes without sacrificing the substantial, mechanical-watch heft collectors expect.

At Bizak and Co., we are proud to offer this Omega Speedmaster Calibre 321 ref. 311.30.40.30.01.001 in brand-new condition on a sourced-on-request basis. Acquiring a new-production watch powered by the genuine Calibre 321 is a rare opportunity: production volumes are limited and demand from collectors worldwide is sustained. Whether you are a dedicated Speedmaster collector completing a historically important set, a first-time luxury watch buyer drawn to the Apollo legacy, or an investor seeking a reference with demonstrable long-term desirability, this is a watch worth acting on promptly. Contact the Bizak and Co. team to discuss availability, pricing, and secure shipping to your door.