Arc Touch Mouse (Black) is currently not available. Returns: Available with eligible physical products purchased from Microsoft Store online and Microsoft Experience Centers in select markets. Return ...

That’s the reason why I need a more portable solution and Microsoft Arc Touch Mouse is probably the coolest mouse of them all. It can work with my MacBook Pro as well as pair with Surface Pro ...

So it seems that Microsoft has a patent in process for a folding mouse. It looks a whole lot like their Arc mouse ... with portability just using the touch pad or steering stick on their ...