Serving as the residual category for alarm clocks with clock movements, this heading captures articles that do not run on battery or AC power — including wind-up mechanical alarm clocks — and any other alarm clock variants not covered by more specific headings. Mechanical wind-up alarm clocks, though a smaller segment of the consumer market, remain commercially relevant in specialty retail and travel categories. Accurate classification requires ruling out battery and AC power sources before assigning goods here, making power-source documentation essential.

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