A Cartier Tank American chronograph wristwatch, automatic chronograph movement, rectangular cream dial with Roman numerals, signed case, dial and movement, 18ct gold case and black leather bands, case reference 1730 / CC273195, case length 1.57 in., with box
- 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.
- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
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