Logitech Wireless Performance Combo MX800 Illuminated Wireless Keyboard and Mouse - Black (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 Illuminated keyboard with smart backlighting: Type comfortably, even in low light, with intelligent auto-illuminated keys Laser-etched Perfect Stroke and Incurve keys: Positions your fingers for optimum comfort and smooth, whisper quiet typing Dark field Laser Tracking mouse: Precision tracking on more surfaces, even on glass, plus Hyper-Fast or click-to-click scrolling and customizable thumb buttons Unifying receiver: One tiny USB receiver wirelessly connects both the keyboard and mouse to the computer