Wireless mouse features easy-switch technology to pair your mouse with three computers & switch seamlessly between them at a touch of the button that's located conveniently under your thumb. Three illuminated numbers always let you know which device you're connected to. Hyper-fast scrolling allows you to fly through long documents & web pages with a spin of the wheel, or switch to click-to-click scrolling when you need precision. Durable design is built to withstand up to 10 million clicks. Large-sized, right-hand design fits comfortably in your palm, & its rubber surface makes it extra soft to the touch. Logitech Flow provides smooth workflow between computers. You'll be able to move your mouse cursor across three computers & even copy & paste text, images & files from one computer to another. Long battery life works up to 24 months on a single AA battery. Customizable design lets you set up & assign tasks to buttons with step-by-step instructions.