Watch reference library
Omega Speedmaster Moonwatch Professional 311.30.42.30.01.005
Produced 2014 to 2021. Discontinued.
Specifications
- Case size
- 42mm
- Case material
- Stainless steel, with a solid steel caseback
- Bezel
- Anodized aluminium bezel with a tachymeter scale
- Dial
- Chronograph dial with Super-LumiNova hands and markers
- Movement
- Omega calibre 1861, manual winding, 18 jewels, 21,600 vibrations an hour
- Water resistance
- 50 meters
- Crystal
- Hesalite
- Bracelet
- Stainless steel bracelet of pin-and-tube construction
The story
Omega launched the Speedmaster in 1957 as a chronograph with its tachymeter scale on the outer bezel. The first Speedmasters ran on the Lemania-based calibre 321 until 1968, when the cam-operated calibre 861 took over, and the Professional stayed almost unchanged until Omega moved to the calibre 1861 in the late 1990s with the reference 3570.50.
The 311.30.42.30.01.005 is the steel-on-steel Moonwatch with a Hesalite crystal and a steel caseback, and Fratello calls it the successor of the 3570.50. Fratello dates it from 2014 to 2020, and Monochrome Watches says the Moonwatch was on sale in this form until early 2021. It was one of four references: this one, a leather-strap Hesalite version (311.33.42.30.01.001), the sapphire sandwich with sapphire crystals front and back on steel (311.30.42.30.01.006), and its leather-strap twin (311.33.42.30.01.002).
In 2021 Omega replaced it with the 310.30.42.50.01.001, which uses the co-axial Master Chronometer calibre 3861 and has a 50-hour power reserve. That watch kept the 42mm case and 50-meter water resistance, and moved the bracelet from pin-and-tube construction to screws.
What to check before you buy
Do not confuse this reference with the sapphire sandwich. The 005 has a Hesalite crystal and a solid steel caseback, while the 006 has sapphire crystals front and back and a see-through caseback. Monochrome Watches lists all four references of this generation, so check the last digits of the reference on the paperwork.
The 005 is also separate from the 310.30.42.50.01.001 that replaced it in 2021. The newer watch has the calibre 3861, a bracelet held with screws instead of pins and tubes, and a caseback engraving that reads Flight-Qualified by NASA in 1965 for all manned space missions, where the older watches read the same without the year. The calibre 1861 was not submitted for chronometer certification, and Fratello says Omega advised on its website that it should run between minus one and plus ten seconds a day on average, so judge a watch's timekeeping against that rather than against a chronometer rating.
Buying or selling a 311.30.42.30.01.005?
Moda is always buying. Text photos to (605) 521-2821 for a fast offer, or start on the Moda Watches page. For any deal with a stranger, Moda's middleman service inspects the watch before money changes hands.
Common questions
Is the 311.30.42.30.01.005 the sapphire sandwich Speedmaster?
No. The 005 has a Hesalite crystal and a solid steel caseback. The sapphire sandwich, with sapphire crystals front and back, is the 311.30.42.30.01.006.
What movement is in the 311.30.42.30.01.005?
The manually wound Omega calibre 1861, which has 18 jewels and beats at 21,600 vibrations an hour. Fratello says Omega used the 1861 from 1996 to 2021.
Is the 311.30.42.30.01.005 still made?
No. Omega replaced it in 2021 with the 310.30.42.50.01.001, which has the calibre 3861.
What did the 311.30.42.30.01.005 replace?
Fratello calls it the successor of the 3570.50, the Moonwatch that introduced the calibre 1861.
How water resistant is it?
The Moonwatch case is rated to 50 meters, and the 2021 update kept the same figure.
Related references
Sources
The facts on this page come from the brand and from established watch publications.