A4Tech NB-30 Battery Free Wireless Optical Mouse@ 2005/03/04
"Well in today's review I will be looking at the A4Tech NB30 wireless and batteryless mouse. This concept was confusing me from the get go, and I couldn't possibly see how this would work well, let alone work. Basically the mouse works by receiving electromagnetic inductive energy, this eliminates any radio frequency interference of a regular wireless mouse, and gives constant power without warranting batteries; though only if the mouse is touching the mousepad. I will bring you to the realm of the batteryless mouse and show you what to know before you spend the money on this new computer peripheral."