Logitech Wireless Solar Keyboard K750 for Mac - Silver (Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com 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 System Requirements: Mac OS X 10.5 or later Powerful 2.4 GHz wireless: Enjoy a reliable connection using a tiny Logitech Unifying receiver that stays in your computer