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 11 Watch cases and parts thereof 91 11 80 Other watch cases 91 11 80 00 Other watch cases Commodity Code Description 91 11 80 00 000 Other watch cases
