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