When a battery-operated radio combines multiple playback technologies, classification generally follows the essential character of the sound reproduction component or, where that is ambiguous, the more specific tariff line. A unit with an optical disc player or recorder component would be examined against 8527136040; if it also includes cassette functionality, the importer should document the primary marketed feature and consult a licensed customs broker, as CBP may apply GRI 3 analysis to determine the appropriate line.

CBP's interpretation is that the device must be capable of operating on battery power alone — the presence of an optional AC adapter or charging port does not automatically disqualify a unit, provided it functions independently on batteries. However, units designed primarily for AC operation that merely accept batteries as a backup may be reclassified under the motor vehicle or household receiver provisions. Technical specifications and product documentation should clearly establish battery-primary operation.