Wireless keyboard is powered by any light - low light and lamp light, indoors and outdoors - so no battery hassles. Fully charged, the Solar Keyboard K760 works for at least three months - even in total darkness. With the Bluetooth wireless technology, enjoy a fast, reliable connection from up to 30' away with no receiver or cable needed. Easy-switching Bluetooth connection makes typing on your Mac and switching to type on your iPad or iPhone as simple and easy as pushing a button. Keyboard is the perfect match for your Mac with a familiar layout and all the keys you expect, including Command, Brightness and Eject keys. For more comfortable typing, the unique, concave key design delivers fast, quiet typing and offers more precision than your iPad or iPhone on-screen keyboard. The slim, minimalist design goes wherever you go with your Mac, iPad or iPhone. The K760 is also designed to reduce its environmental footprint from the PVC-free construction to the fully recyclable box.