" Illuminated keyboard with smart backlighting Type comfortably even in low light with intelligent auto-illuminated keysbr Laser-etched Perfect Stroke and Incurve keys Positions your fingers for optimum comfort and smooth whisper quiet typingbr Dark field Laser Tracking mouse Precision tracking on more surfaces even on glass plus Hyper-Fast or click-to-click scrolling and customizable thumb buttonsbr Unifying receiver One tiny USB receiver wirelessly connects both the keyboard and mouse to the computerbr PC compatible Works with Windows XP Windows Vista Windows 7 Windows 8 or later br Logitech Wireless Performance Combo MX800 Illuminated Wireless Keyboard and Mouse (920-006237)"