From the manufacturer Logitech Wireless Mouse M185 A simple, reliable mouse with plug-and-play wireless. You get the reliability of a cord with wireless convenience and freedom—fast data transmission and virtually no delays or dropouts. Highlights Reliable wireless connection with plug-and-play Nano receiver 1-year battery life without changes* Lasting Logitech quality and performance Comfortable contoured shape * Battery life may vary based on user and computing conditions. Features Easy wireless freedom with plug-and forget nano receiver Works with Windows, Mac, Chrome OS or Linux-based computers. So small and unobtrusive, you can plug it into a USB port and forget about it. No more worries about lost receivers. Year-long power 1-year battery life*. The On/Off switch and smart sleep mode help conserve power. * Battery life may vary based on user and computing conditions. Logitech Advanced 2.4 GHz wireless connectivity You get the reliability of a cord with wireless convenience and freedom—fast data transmission and virtually no delays or dropouts. Hand-friendly design Move up from your tricky touchpad to the comfy shape of this contoured mouse. Compatibility Works with Windows 8, Windows 7, or Windows Vista Mac OS X 10.5 or later Chrome OS Linux kernel 2.6+ USB port Package contents Mouse Nano receiver 1 AA battery (pre-installed) User documentation 3-year limited hardware warranty