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 Wrist-watches, pocket-watches, etc,incl. stop-watches, other than of heading 91.01 91 02 11 With mechanical display only 91 02 11 00 With mechanical display only Commodity Code Description 91 02 11 00 000 With mechanical display only