Fantech GO W606 Wireless Office Mouse with Ergonomic Grip: Plug and Play Connectivity It is portable and lightweight, making it easy to take on all of life's adventures! Long Lasting Battery Life: You won't have to be concerned about running out of power while working because the battery lasts up to three months. Plug-and-play Nono Receiver: Easily free up desk and laptop space! When not in use, it fits neatly inside the mouse. Smooth and Stable Tracking: For improved productivity at work, optical tracking technology is used.