Logitech Wireless Mouse Grey M191 #910-005927 is a wireless mouse with a sleek, contoured design that follows the natural curve of medium to large hands. It features a 1000 DPI optical sensor for smooth and accurate cursor control on most surfaces. It has a battery life of up to 18 months on a single AA battery with the feature of auto-sleep for conservation. With a strong and reliable wireless connection, this mouse provides mobility of up to 10 meters (33 feet). It is compatible with Windows 7, 8, 10, MacOS 10.10 or later, Chrome OS, and Linux Kernel 2.6+. This mouse is a great option for anyone looking for a comfortable and reliable wireless mouse.