A4Tech NB-50: Batteryless and wireless mouse
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When I first saw the press release for the A4Tech "battery-free" wireless optical mouse, I figured there was some kind of marketing wizardry involved. Maybe there weren't "batteries," per se, but it was rechargeable through some other means? Or did it contain some revolutionary new mouse technology, like harnessing the kinetic energy of mouse movements? Or something more esoteric, like powering the mouse with my own sense of self-satisfaction? Turns out it's actually powered by RFID -- and it ended up being a great mouse, especially considering the $20 pricetag.
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