Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION , MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; M USICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 91 Clocks and watches and parts thereof 91 05 Other clocks. 91 05 11 91 05 11 00 Commodity Code Description 91 05 11 00 00 -- Electrically operated 91 05 19 00 00 -- Other 91 05 21 00 00 -- Electrically operated 91 05 29 00 00 -- Other 91 05 91 00 00 -- Electrically operated 91 05 99 00 00 -- Other