Logitech K750 Wireless Solar Keyboard for Mac &mdash; Solar Recharging, Mac-Friendly Keyboard, 2.4GHz Wireless - Silver Solar-powered keyboard: No battery hasslesany light source keeps your keyboard charged for at least three months in total darkness Only 1/3-inch thick: Ultra-thin design adds sleek style to your workspace Familiar Mac layout: All the keys you're used to, plus a Launchpad hot key, are exactly where you expect them Feel-good typing: Logitech-only concave key cap design for faster, quieter, more comfortable typing. System Requirements - Mac OS X 10.5 or later,USB port,Light source from sunlight and/or indoor lighting Tiny Logitech Unifying receiver: Stays in your laptop and connects additional compatible wireless devices. Not Bluetooth compatible Mac OS X 10.5 or later USB port Light source from sunlight and/or indoor lighting