MonoPrice M19 Wireless USB Mouse - This plug & play wireless mouse from Monoprice frees you from the oppression of cords and wires with a 2.4Ghz wireless USB reciever. No special software or drivers are required - just plug in the reciever and get clicking. Wires? Wires!?! We don't need no stinkin' wires! Free yourself from the tyranny of tangled wires and short cords with the M19 Wireless 3-Button Optical Mouse from Monoprice! This attractive and comfortable mouse is perfect for laptops, desktops, media PCs, or any application where a mouse cord would be a nuisance. Instead of a cord, this mouse connects using a 2.4 GHz wireless signal between the mouse and its small USB dongle. When not in use the USB dongle can be stored in the base of the mouse, and magnetic contacts ensure it won't fall out. The mouse is powered by two AAA batteries (included) and has an effective operating range of 15 feet. The mouse measures about 3 7/8" long and 2 5/16" wide. The domed upper surface peaks at about 1 1/4" height. The sides of the mouse are etched for improved grip and ergonomically shaped for maximum comfort. No installation or drivers are required. Just plug it in and it works!