Make battery hassles a thing of the past with this wireless keyboard that is powered by indoor or natural light, plus can stay charged for up to three months. Light-check hot key clearly indicates if it's receiving enough light and ready to use. Long-range wireless connection virtually eliminates delays, dropouts and interference, so you can work and play in more places. Setup is as easy as plugging the wireless receiver into a USB port on your computer?no software required. Tiny Logitech