| 摘要 |
A self-inflating mouse device includes a mouse body and an extension part. The mouse body includes a bottom surface and a side protrusion. The extension part that may be expandable includes an opening coupling with the side protrusion. While the extension part is expanded, the contact area between the self-inflating mouse device and an user's palm is increased. Further, while the extension part is folded, the volume of the self-inflating mouse device is reduced as a compact form being convenient for storage.
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