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 12 months of battery life, you don’t have to deal with the hassle of frequent battery changes.Hand-friendly design:The full-size, contoured design with soft rubber grips feels good in either hand—even after long hours of use.Comfortable hands like comfortable mice.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. Plug into more about the plug-and-forget nano-receiver.12-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.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.Logitech reliability:You get the high quality and reliability that’s made Logitech the global leader for mice at a price you can afford—plus a three-year limited hardware warranty.