Upgrade to smarter scrolling better comfort and more productivity with the Signature M650 L. The versatile mouse features an adaptive scroll SmartWheel that delivers line-by-line precision and auto-switches to super fast free spin mode with the flick of a finger. A choice of sizes for smaller larger and left hands means there s a perfect fit for anyone. Seamless wireless connectivity customizable side buttons and a comfort shape keep you comfortably and productive hour after hour. Logitech?s SilentTouch technology delivers silent clicks to keep you focused ? while 24-month battery life** and universal operating system compatibility ensure hassle-free performance. **Battery life may vary based on user and computing conditions