An Omega Speedmaster Professional 'Moonwatch' gent's wristwatch, ref 145022-69, stainless steel case, black dial with sub-registers and centre chronograph hand, calibre 861, 17 jewel movement. Serial no. 31008456. Resin strap
- 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.
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