The right-handed Logitech M320 Wireless Optical Mouse is designed for enhanced comfort to put your hand in the most natural position. Smooth control Thanks to the Logitech's advanced optical sensor, the M320 gives you smooth cursor control & precise tracking. Its wide scroll wheel makes scrolling easier so you can get to work in no time. Wireless capability The Logitech M320 has an up to two years battery life & offers easy wireless computing at home or on the go. The tiny wireless receiver pops into your computer's USB (Universal Serial Bus) port & provides a convenient & reliable wireless connection. Say hello to cable-free computing with the Logitech M320 Wireless Optical Mouse.