Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; MUSICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 91 CLOCKS AND WATCHES AND PARTS THEREOF 91 09 CLOCK MOVEMENTS, COMPLETE AND ASSEMBLED. 91 09 90 OTHER CLOCK MOVEMENTS, COMPLETE & ASSEMBLED Commodity Code Description 91 09 90 00 OTHER CLOCK MOVEMENTS, COMPLETE & ASSEMBLED