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 02 Wristwatches, pocket-watches and other watches, including stopwatches, other than those of heading†9101 Commodity Code Description 91 02 11 With mechanical display only 91 02 12 With optoelectronic display only 91 02 19 Other 91 02 21 With automatic winding 91 02 29 Other 91 02 91 Electrically operated 91 02 99 Other