Omega Speedmaster Calibre 321 Ed White Steel

February 5, 2021
1 min read
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Stainless-steel case, 39.7 mm, ceramic bezel, sapphire front & back — Calibre 321 manual-winding, 55-hour reserve.

Omega Speedmaster Calibre 321 Ed White front view

Design & Case: Vintage 39.7 mm Execution

The watch uses a 39.7 mm stainless-steel case finished with alternating brushed and polished surfaces. Combined with clean, straight lugs, the silhouette faithfully mirrors vintage Speedmaster proportions. The black zirconia ceramic bezel is printed with a white enamel tachymeter scale for enhanced legibility versus standard bezels.

Dial & Classic Moonwatch Layout

The black stepped dial preserves the classic Moonwatch layout: 30-minute counter at 3 o’clock, 12-hour counter at 6 o’clock, and small seconds at 9 o’clock. Period details include retro beige Super-LumiNova on hands and indices, the old-style OMEGA logo at 12 o’clock, an elongated Speedmaster “r” script and the iconic “dot over 90” on the tachymeter.

Omega Speedmaster Calibre 321 Ed White display back movement

Calibre 321: Column-Wheel Chronograph on Display

Re-created to match the architecture of the original, the Calibre 321 is an integrated column-wheel chronograph finished with a Sedna™ gold coating rather than the original brass plating. Each movement is hand-assembled by a single watchmaker, runs at 18,000 vph, offers 17 jewels and delivers a practical 55-hour power reserve.

Sapphire Display Back & Bracelet

Unlike many modern Speedmasters with closed casebacks, this edition features a sapphire-crystal display back that reveals the movement and finishing details. The watch is supplied on a matching stainless-steel bracelet with a folding clasp, and it is rated to 50 m of water resistance.

Key specifications

  • Case: Stainless steel, 39.7 mm × 13 mm thickness
  • Bezel: Zirconia ceramic with white enamel tachymeter
  • Movement: Manual-winding Calibre 321, 18,000 vph, 17 jewels
  • Power reserve: 55 hours
  • Bracelet: Stainless-steel, folding clasp
  • Water resistance: 50 m
  • Complication: Chronograph
  • Official retail price (example market): 113,100 RMB

Collector Notes & Context

For collectors, the Omega Speedmaster Calibre 321 Ed White combines historical accuracy with modern finishing. If you want official product details, technical galleries and ordering information, see OMEGA’s product page: OMEGA Official Site.

Suggested internal links: link to your Speedmaster collection page, a Calibre 321 feature article, or related product reviews on your site to increase internal SEO relevance.


Article last updated: November 24, 2025 — Prices and availability may vary by market. For the latest market price confirm with your local OMEGA retailer.

 

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