The Logitech M235 Wireless Mouse has a contoured design and can beused by both right- and left-handers comfortably. It is very user-friendlytoo. Simply plug in the nano receiver and the Logitech wireless mouseis ready to move around the screen. Its ergonomic shape and softside grips will keep your hands free of strain even after continuoususe for several hours. This wireless optical mouse with advancedoptical tracking ensures accurate pointing, clicking and navigatingon various surfaces that are otherwise not suitable for other opticalmice. The nano receiver mouse has a smart sleep mode and an on/offswitch for help extend the battery life. A battery indicator lightalerts you of low charge well in time to avoid sudden surprises.