Logitech Triathlon Bluetooth Mouse M720

Easy-switch technology pair your mouse with 3 computers, then switch seamlessly between them at a touch of the button conveniently positioned under your thumb. the 3 illuminated numbers always let you know to which device you're connected. 24-month battery life work for up to two years battery changes. to extend the battery life, use the on/off switch power off when not in use. plug-and-play connection just insert the receiver into a usb port on your computer and begin using it right away. there is no need to pair the mouse or to download software in order to begin using it. built for endurance, versatility, and comfort