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Omega 311.30.42.30.01.006

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Ref. 311.30.42.30.01.006: Sapphire crystal Moonwatch

The Ref. 311.30.42.30.01.006 is the 42mm Omega Speedmaster Moonwatch Professional Chronograph. The special feature of the Ref. 311.30.42.30.01.006 is the sapphire crystal on both the front and back of the watch. Thanks to the scratch-resistance of the robust material (genuine synthetic sapphire monocrystals), the front of the watch is unlikely to be scratched, even when subjected to intensive use. Thanks to the glass back, it is also possible to view the chronograph calibre 1863.

At CHRONEXT, you will find a large selection of Omega Speedmaster watches at incredible prices and available for immediate delivery. Discover references like the 311.30.42.30.01.006 and find a valuable deal.

The Ref. 311.30.42.30.01.006 in detail

The latest generation of Omega reference numbers consists of 14 digits following the Omega-developed PIC-14 system. Specifically, this is the scheme AAA.BB.CC.DD.EE.FFF. Each pair of digits has a specific meaning. Ref. 311.30.42.30.01.006 stands for the following:

  • 311: collection code (311 = Speedmaster)
  • 30: Material of case and band (33 = steel/steel)
  • 42: diameter (42 = 42 millimetres)
  • 30: Calibre and complications (3 = mechanical chronograph, 0 = no further complications)
  • 01: Colour of the dial and if applicable stone setting (= black)
  • 006: Model-specific code (here: sapphire a crystal in front, a sapphire crystal in the back)
Ref. 311.30.42.30.01.006

A finished calibre

The sapphire crystal Ref. 311.30.42.30.01.006 differs from the classic Hesalite glass Moonwatch with Ref. 311.30.42.30.01.005 not only by the material of the glass on the front and the back. Since the sapphire crystal reference has a glass back, unlike the Speedmaster with Hesalite crystal, Omega has also made some changes to the movement used: The Speedmaster 311.30.42.30.01.006 is therefore not equipped with calibre 1861, but with the slightly modified calibre 1863. The movement 1863 was rhodium-plated and finished with Geneva stripes (Côtes de Genève). Furthermore, the lever handle is not made of the plastic Delrin (polyoxymethylene POM), but of a more beautiful looking stainless steel.

Buy Omega Speedmaster references from CHRONEXT

You will find both the Ref. 311.30.42.30.01.006 and other versions of the Omega Speedmaster in our online shop. Besides fair deals on new as well as pre-owned and vintage watches, buying from us has many advantages:

  • Guaranteed authenticity: Our certified watchmakers check every watch in our store.
  • Large selection: Find more than 7,000 luxury watches online.
  • Our 24 months CHRONEXT warranty on all watches – Whether new, pre-owned or vintage.
  • Free shipping worldwide and a 14-day right of return.
  • Various financing options in Germany.
  • Optional: Personal collection in one of our worldwide lounges.