There hasn't been a real change in how peripherals are powered since wireless gear first showed up that used batteries for power. The catch with batteries or rechargeable keyboards or mice is that when they are out of power the user can't use the device until they recharge or plug in.

Logitech is one of the largest peripheral companies around and the company has announced a new keyboard called the Logitech Wireless Solar Keyboard K750. The new peripherals biggest feature is that it gets all the power it needs to operate from the light in your room. Like most solar calculators, the K750 isn't limited to using the sun alone for power. It can get juice to operate from any light source including your desk lamp or the glow from your monitor. 

“The keyboard is still the best input device for typing emails and IMs, updating your Facebook™ page or posting responses to your favorite blogs — and the Logitech Wireless Solar Keyboard K750 is the next big innovation in keyboard technology,” said Denis Pavillard, vice president of product marketing for Logitech’s keyboards and desktops. “The Logitech Wireless Solar Keyboard is powered by light but can work in total darkness for up to three months. Plus, with its PVC-free construction and fully recyclable packaging, it’s designed to minimize its footprint.”

Exactly how much juice you get from your light source and if it's enough to keep your keyboard powered indefinitely will be easy to figure out with an app Logitech will offer later this month. The app installs on the computer and tells the user with an easy to understand digital gauge if the light source hitting the keyboard is enough to charge it adequately. The internal batteries will stay charged for three months once full so you can type in darkness.

The keyboard is very thin at about one-third of an inch making it low profile and comfortable to type on. The keys of the keyboard use the Incurve design for comfortable typing feel. The wireless tech is 2.4GHz and uses the Unifying Receiver of all Logitech gear. That receiver allows you to connect the keyboard and other Logitech peripherals without needing additional USB ports on the host computer.

The keyboard will ship this month in the U.S. and Europe for $79.99.