PORTABLE ELECTRONIC DEVICE
    2.
    发明申请

    公开(公告)号:US20190131812A1

    公开(公告)日:2019-05-02

    申请号:US15748832

    申请日:2015-11-17

    Abstract: A portable electronic device, which allows for easy self-charging while minimizing the size of a battery and can thus achieve long-term use, comprises: a ring-shaped first housing; a second housing which has a ring shape corresponding to the first housing and is arranged to be parallel to a side of the first housing; a charging coil mounted on the first housing and wound along the ring shape of the first housing; a plurality of magnets arranged in the second housing; and a battery which is charged using a current flowing through the charging coil when the second housing is rotated with respect to the first housing.

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