MINI 800dpi/1600dpi 2.4GHz RF Wireless USB Optical Mouse with Mini Receiver, only USD $7.99 with worldwide free shipping, lowest price ever, one month only.
*2.4GHz digital wireless transmission, operation distance is up to 10 meters
*Built-in mouse memory, no recording is needed after battery replacement
*Intelligent connectivity, code-free, plug-and-play
*Ergonomically designed, comfortable grip
*With power switch
Dealextreme.com has 100's of these for under 8USD. NOT A BARGAIN.