Ad
Ad
Ad
Ad
Ad
Ad
Reading time 3 min.

In the Steel of the Moonlight: The New Omega Speedmaster Moonwatch Caliber 321

Omega Speedmaster Calibre 321 - steel
Omega Speedmaster Calibre 321 - steel
© PR
Omega capped off its 50th anniversary celebration as the first watch worn on the moon last July, with the release of a platinum-cased special edition of the iconic Speedmaster "Moonwatch" outfitted with the recently re-invented Caliber 321. The Swiss watchmaker rings in 2020 with a more accessible version of that timepiece, equipped with the same manually wound movement housed in a stainless steel case.
Omega Speedmaster Moonwatch 321 - steel - reclining
The Omega Speedmaster Moonwatch Caliber 321 re-creates the watch worn by Ed White on the 1965 Spacewalk. © PR
The Omega Speedmaster Moonwatch Caliber 321 Stainless Steel takes its primary aesthetic inspiration not from the famed Reference ST 105.012 model, which was the watch that Buzz Aldrin famously wore on the lunar surface in 1969, but from the earlier Reference ST 105.003, which astronaut Ed White wore in 1965 when he became the first American to walk in space. Its steel case is 39.7 mm in diameter, with the ring of its familiar tachymeter-scale bezel made of polished black ceramic (Zr02), accented by tachymeter markings in white enamel. (Collectors of vintage Speedies will also appreciate details like the "dot over 90" on the bezel, a subtle detail that identifies a Speedmaster model as being from pre-1970.) models This model's stepped, black dial is distinct from that of its precious-metal predecessor (which was modeled on the 1969 Moonwatch reference, and used black onyx for its dial and actual moon meteorite for its three subdials), in that it uses standard tone-on-tone subdials with white markings in the classical tricompax arrangement —  elapsed minutes, elapsed hours, and running seconds at 3, 6, and 9 o'clock, respectively — along with the emblematic Moonwatch hands and vintage-style Omega logo.
Omega Speedmaster Moonwatch 321 - steel - front
The tachymeter bezel ring is made of black ceramic. © PR
Of course, what's inside the watch is at least as much of a draw as what's outside. Brought back into production by Omega after an over 50-year hiatus, the newly revived Caliber 321 can be admired through the watch's sapphire caseback. A mainstay of many historical Omega watches since its debut in the 1940s, including some of the early Seamaster chronographs, the original Caliber 321 was the movement used in the first Omega Speedmaster from 1957, as well as in several historically significant Speedmaster models in subsequent years, including the now-legendary pieces worn by White on his Spacewalk and by Apollo 11 astronauts for the moon landing. It was notable, and remains prized by vintage-watch collectors to this day, for its use of a monobloc column wheel, machined from a single piece, and for its attractive architecture. As part of its two-year-long project to reconstruct this manual-winding chronograph movement as accurately as possible at its atelier in Bienne, Switzerland, Omega used a digital scanning technology called “tomography” to study the movement inside the ST 105.003 worn by Apollo 17 astronaut Gene Cernan in 1972, and use its design as a blueprint. This steel model becomes the second modern Omega watch to contain this historically significant caliber — whose distinctive Sedna gold finish replicates the original's copper finish while adding greater stability — after last year's platinum limited edition.
Omega Speedmaster Moonwatch 321 - steel - caseback
The modern version of the historical manual-winding Caliber 321 is on display through the caseback. © PR
The Omega Speedmaster Moonwatch Caliber 321 Stainless Steel — which some have already nicknamed the "Ed White" — is priced at $14,100 and, unlike the platinum Moonwatch with Caliber 321, is not a limited edition.
Archiv

Latest Articles

Shimmering and Sustainable: Citizen Introduces the Promaster Blue Ocean - Professional dive watch capability, environmentally-conscious materials
With the new Promaster Blue Ocean, Citizen combines professional dive-watch functionality with environmentally-conscious materials. The limited edition features a shimmering dial made from recycled plastic, an Eco-Drive movement, and a biomass-based strap.
3 minutes
Jul 21, 2026
Maurice Lacroix Honors Its Jura Roots with 1975 Legacy Models - Celebrating the region that shaped the watchmaker
Two new limited editions celebrate the Jura region that shaped Maurice Lacroix, combining the collection’s vintage-inspired design with locally inspired dial patterns and a commemorative caseback engraving.
3 minutes
Jul 20, 2026
Breitling Honors Cycling Legend with the Top Time B01 Eddy Merckx - Celebrating the most successful cyclist in history
Breitling expands its vintage-inspired Top Time collection with a tribute to Eddy Merckx. Limited to 525 pieces, the new chronograph celebrates the Belgian champion's unprecedented career with a distinctive yellow dial, the manufacture Caliber B01, and numerous details referencing his record-breaking 525 victories.
3 minutes
Jul 21, 2026

You might also be interested in

The History and Evolution of the Omega Seamaster - A decade-by-decade look
From its postwar beginnings to the depths of the modern Ultra Deep, the Omega Seamaster has evolved through decades of shifting technology, culture, and design. This feature from our Special Design Issue traces how one collection adapted to each era while remaining unmistakably a Seamaster.
5 minutes
Jul 3, 2026
To the Summit without Oxygen: A Spotlight on the Montblanc 1858 Geosphere 0 Oxygen
Montblanc is emphasizing the meaning of its brand name to a greater degree and creating innovative watches connected to alpinism. The company recently collaborated with extreme mountaineer Reinhold Messner to create a watch with no oxygen inside its case.
9 minutes
May 25, 2026
Omega Enters the Game with the Seamaster Diver 300M Chronograph “007 First Light” - Digital becomes reality
Omega’s latest James Bond watch ties into the upcoming 007 First Light video game, combining the Seamaster Diver 300M’s signature design with a black ceramic-heavy aesthetic and the Co-Axial Master Chronometer Caliber 9900.
4 minutes
May 21, 2026
Ad
Ad
Ad
Ad
Ad