Logitech's innovative Wireless Solar Keyboard K750 is set to be released in the U.S. in November for $79.99. You won't have to depend on sunlight, because the light-powered keyboard powers itself with indoor light as well. It has an integrated solar panel at the top edge as seen in the photo here, and works with a solar power app which does several things. The app features a lux meter to help you get the necessary light, it shows you information about battery levels, and it alerts you if and when you need more power to run the keyboard. According toLogitech, the Wireless Solar Keyboard K750 stays charged for at least three months in total darkness.
The keyboard also features Logitech Incurve keys which support the shape of your fingertips, and Logitech Advanced 2.4 GHz wireless connectivity with 128-bit AES encryption, which works with the tiny Logitech Unifying receiver plugged into your PS's USB port.
