Logitech Wireless Mouse M310 Black/Grey - Full Size Optical Mouse ( new/sealed ) IN GOOD SHAPE Left-handed or right, you’ll be comfortable with this contoured design with soft rubber side grips. PLUG AND FORGET The wireless, USB nano-receiver is always ready for use. Plug it in once and forget about it. POWER-PACKED With 18 months of battery life, you don’t have to deal with the hassle of frequent battery changes.1 HAND-FRIENDLY DESIGN The full-size, contoured design with soft rubber grips feels good in either hand—even after long hours of use.2 PLUG-AND-FORGET NANO-RECEIVER So small and unobtrusive, you can plug it into a USB port and forget about it. Plus, you can say good-bye to worries about lost receivers. 18-MONTH BATTERY LIFE You can go for a year without battery hassles. An On/Off switch and smart sleep mode extend battery life, while an indicator light eliminates surprises.1 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. SMOOTH, RESPONSIVE TRACKING You’ll get right where you want to go with smooth, responsive cursor control, easy text selection, and effortless scrolling that touchpads can’t compete with.