"Gigabyte's new wireless rechargeable optical mouse, the GM-W9C, is an
RF device that is scaled for portability, and includes a rechargeable battery
that can be charged within the mouse itself for convenience.
Anyone who has tried to use a conventional wired mouse with a laptop in a
cramped environment such as an airplane will appreciate the benefits a wireless
optical mouse can bring. They offer an excellent
alternative to the built-in touchpads and trackpoints that many find
difficult to use."