An Omega Speedmaster Chronograph Triple Date wristwatch, Mk40,…
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An Omega Speedmaster chronograph Triple date wristwatch, Mk40, ref.1275.0084, automatic cal.1151 movement runs but requires service. 3.9 cm stainless steel case and original bracelet. three subs dials includes day/month.

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  • Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
  • Chronograph - A chronograph is a watch that also incorporates the features of a stopwatch, to measure elapsed time. Most chronographs are operated by two buttons, one to start and stop the chronograph second hand, and the other to return that hand to the starting position.
  • Date Aperture - A date aperture is a cut out section in the face of a watch or clock, displaying the day of the month.

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