Logitech M525 Wireless Optical Mouse Black and Grey

System requirements: Windows 7 Windows Vista Windows XP Mac OS X 10.5 or later   Package Includes: Logitech M525 Wireless Mouse Logitech Unifying receiver You must download the software,  click here   Improved scroll control   Innovative Micro-precision scroll wheel  puts more control under your finger with more grooves per millimeter Faster, easier web navigation and scrolling through long web pages Tilt wheel lets you move backward and forward on the web, just like a swipe*   Long-lasting power 3 full years of battery life means you almost never need to change batteries On-Off switch and smart sleep mode save power Battery indicator light eliminates surprises\  Hand-friendly design Ergonomic shape and soft rubber grips conform to your hand and feel naturally comfortable Compact size is easy to take with you from home to work or anywhere you use your computer  Versatile USB wireless receiver  Unifying receiver connects up to 6 Unifying-compatible devices. A