For purposes of customs tariff classification under the Customs and Excise Act 91 of 1964, a product must be classified according to its objective characteristics, essential features, and primary design and use as presented at the time of importation. Where a composite product is imported as a fully functional unit comprising multiple components packaged together, it must be classified according to the function of that complete unit, not merely one of its constituent parts. A product that is presented as a fully functioning lamp upon importation, comprising a solar panel, power bank, and LEDs with cabling, possesses an existence and utility of its own as a lamp and must be classified under tariff heading 9405.40.21 (lamps and lighting fittings containing LEDs as a source of illumination) rather than tariff heading 8501.31 (electric motors and generators). The classification is determined by what the product is at importation, not what it might be adapted to be or used for by the end user.