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 13 WATCH STRAPS, WATCH BANDS AND WATCH BRACELET, AND PARTS THEREOF. 91 13 20 WATCH STRAPS/BANDS/BRACELETS OF BASE METAL, WHETHER OR NOT GOLD/SILVER-PLA Commodity Code Description 91 13 20 00 WATCH STRAPS/BANDS/BRACELETS OF BASE METAL, WHETHER OR NOT GOLD/SILVER-PLA