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 01 Wristwatches, pocket-watches and other watches, including stopwatches, with case of precious metal or of metal clad with precious metal 91 01 99 OTHER 91 01 99 00 OTHER Commodity Code Description 91 01 99 00 000 OTHER