91: CLOCKS AND WATCHES AND PARTS THEREOF
9101: Wristwatches, pocketwatches and other watches, including stopwatches, with case of precious metal or of metal clad with precious metal.
9102: Wristwatches, pocketwatches and other watches, including stopwatches, other than those of heading 91.01.
9103: Clocks with watch movements, excluding clocks of heading 91.04.
9104: Instrument panel clocks and clocks of a similar type for vehicles, aircraft, spacecraft or vessels.
9105: Other clocks.
9106: Time of day recording apparatus and apparatus for measuring, recording or otherwise indicating intervals of time, with clock or watch movement or with synchronous motor (for example, time registers, timerecorders).
9107: Time switches with clock or watch movement or with synchronous motor.
9108: Watch movements, complete and assembled.
9109: Clock movements, complete and assembled.
9110: Complete watch or clock movements, unassembled or partly assembled (movement sets); incomplete watch or clock movements, assembled; rough watch or clock movements.
9111: Watch cases and parts thereof.
9112: Clock cases and cases of a similar type for other goods of this Chapter, and parts thereof.
9113: Watch straps, watch bands and watch bracelets, and parts thereof.
9114: Other clock or watch parts.