| 摘要 |
Provided is a wheel for roller sporting goods playing at least two tunes of music, thereby enabling a user to take an interest by hearing the directly selected tunes. The wheel for a roller blade, a roller skate, an in-line skate, a kick board, and a tricycle is equipped with an independent electric power plant. A memory(17) which is stored at least two tunes of music is mounted on an inner portion of the wheel. A PCB substrate is attached on an upper portion of a power generating member(14) or a flange of a lower case(12). A shape of the PCB substrate is a doughnut shape having at least one circle formed on the inner and outer peripheral surfaces of the PCB substrate. A power on/off switch and volume control unit are installed on the outer surface of the upper or lower cases.
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