Every Omega Speedmaster Professional reference, 1957 to today, from the broad-arrow CK2915 to the Master Chronometer 310.30. The Moonwatch lineage in one place.
Introduced1957
References16
Spanning1950s - 2020s
The Omega Speedmaster Professional has only ever done one thing: count seconds with a chronograph. From the 1957 ref. CK2915, the first watch with the tachymeter scale on the bezel rather than the dial, through the watch NASA qualified in 1965 and Buzz Aldrin wore on the lunar surface in 1969, to the Apollo-era 105.012 / 145.012, the long Cal. 861 / 1861 era, and the current Master Chronometer ref. 310.30 with Cal. 3861, the Speedmaster Professional is the most evolution-resistant watch in modern horology.
Three movement eras define it: the column-wheel Cal. 321 (1957-1968), the cam-switch Cal. 861 and its Cal. 1861 successor (1968-2021), and the co-axial Master Chronometer Cal. 3861 from 2021. Every Moonwatch reference below sits in one of those three families.
Filter:
CK2915
Broad Arrow
1957-1959
39mm case60m WR
DialBlack with applied silver Omega logo, "Speedmaster" curved at top
BezelStainless steel, engraved tachymeter (the first watch with bezel-mounted tachymeter)
First Speedmaster. Broad-arrow hands, sym-metric case (no crown guards), 39mm. Production estimated under 3,000 across the three years - one of the most-coveted vintage Omega references.
CK2998
1959-1962
40mm case60m WR
DialBlack, applied logo
BezelBlack aluminium tachymeter, "scalloped" or smooth
Second-generation Speedmaster. Alpha hands replaced broad arrows, the bezel insert went from steel to black aluminium. Walter Schirra wore a CK2998 on Mercury Sigma 7 in October 1962 - the first Speedmaster in space.
105.002
1962-1963
40mm case60m WR
DialBlack with applied "Speedmaster" logo, alpha hands
Last sym-metric (no crown guards) Speedmaster. One-year production. Earned a vintage premium for its transitional position between the early Speedmasters and the asymmetric Apollo-era models.
The reference NASA qualified in 1965. Ed White wore a 105.003 outside Gemini IV on 3 June 1965 during the first US spacewalk. Sym-metric case continued; the first asymmetric case came with the 105.012.
First Speedmaster with the asymmetric crown-guard case (the modern silhouette) and the "Professional" designation on the dial. The watch worn during the Apollo program, including by Buzz Aldrin on the lunar surface in 1969.
Twenty-year production. Sub-variants tracked by year suffix (-68, -69, -71, -76, -78); the 1969 -69 examples are the first "Moonwatch" Cal. 861 references. NASA approved the Cal. 861 swap.
The eighteen-year reference most collectors picture when they hear "Moonwatch". Hesalite crystal, solid caseback engraved with seahorse and Apollo medal. The classic spec.
Sapphire-sandwich variant of the 3570.50. Sapphire crystal up top, sapphire display caseback showing the movement. Heavier and slightly thicker than the hesalite.
311.30.42.30.01.005
2014-2021
42mm case50m WR
DialBlack, "step dial" returns (recessed sub-dials), applied indices
Hesalite reference of the 2014 Speedmaster Professional refresh. Step dial brought back, indices became applied (rather than printed). The "purist" Moonwatch of the late 1861 era.
BraceletUpdated 5-link Speedmaster bracelet with comfort adjust
Current Moonwatch. Cal. 3861 brings co-axial escapement, Master Chronometer certification, and METAS magnetic resistance. Hesalite crystal preserves the NASA-spec aesthetic. Dial closer to vintage proportions than 311.30 era.
Speedmaster Pulsations: dial features a heart-rate pulsations scale alongside the chronograph minute track. Limited to 5,000 pieces. Released 2024 as a tribute to medical-use chronographs.
No references match all selected filters.
NASA qualification, 1965
NASA tested chronographs from Omega, Rolex, Longines and others in 1964-65 against thermal extremes (-18°C to +93°C), shock, vacuum, vibration and humidity. Only the Speedmaster ref. 105.003 survived. NASA designated it "Flight Qualified for All Manned Space Missions" on 1 March 1965. The first Speedmaster in space had already flown on Walter Schirra's wrist in October 1962, before formal qualification. Ed White wore one outside Gemini IV on 3 June 1965 - the first US spacewalk.
Cal. 321 to Cal. 861: the 1968 transition
Omega switched the Speedmaster's movement in 1968 from the column-wheel Cal. 321 (Lemania 2310) to the cam-switch Cal. 861 (Lemania 1873). Cost was the driver: Cal. 861 had fewer parts and was cheaper to assemble. NASA approved the change. Cal. 321 came back as a halo movement in 2019 (Omega rebuilt the production line for it), reserved for high-end limited editions, while the bulk Speedmaster line moved to Cal. 1861 (1996) and Cal. 3861 (2021).
Hesalite vs sapphire
The Speedmaster Professional ships with two crystal options. Hesalite (acrylic) is the original specification: scratchable but shatter-proof. NASA insisted on it because shattered glass in zero-g is a hazard. Most "true Moonwatch" purists buy the hesalite version. Sapphire sandwich (sapphire crystal + sapphire display caseback showing the movement) was added in 1996. The hesalite version is lighter (~94g vs 145g for sapphire) and several mm thinner.