The point-and-click finger mouse.

Say goodbye to the traditional computer mouse because here comes the USB Finger Mouse Optical. It is tiny, lightweight and can be comfortably fixed on your finger. Plug it in and you’re good to go. Works on whatever surface is available and responds fast on every movement. Since it uses USB technology, you don’t need to worry about erratic connections or dead batteries.

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Buy on www.amazon.com
Under $25