Solar-powered keyboard: No battery hassles - any 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 Feel-good typing: Logitech-only concave key cap design for faster, quieter, more comfortable typing Powerful 2.4 GHz wireless: Enjoy a reliable connection using a tiny Logitech Unifying receiver that stays in your computer Works with Windows-based laptop and desktop PCs Battery hassles are a thing of the past with the solar-powered Logitech Wireless Solar Keyboard K750.