Slim, light, and ready to travel, Microsoft Arc Mouse is designed to conform to your hand — and snaps flat to fit easily in your bag. The next generation of our best-selling Arc Touch Bluetooth Mouse, Microsoft Arc Mouse features numerous refinements, including the ability to scroll both vertically and horizontally. Connects via Bluetooth. Ultra-slim and lightweight, Microsoft Arc Mouse goes anywhere without the weight or bulk of traditional mice. Just snap it flat and easily slip it in your pocket or bag.