Curved when you want, flat when you need, the Arc Surface mouse by Microsoft follows a format it set a long time ago. The mouse comes as a flat, remote-ish shape and can bend/curve/arc into an ergonomic mouse when needed. When you’re done, the mouse unfolds and becomes flat again.
The Arc Surface mouse, however, has a key difference that makes it rather useful and advanced. It ditches the clicking keys and scroll wheel for a touch surface, much like Apple’s Magic Mouse. The surface lets you perform right and left clicks, but its capacitive-touch property also lets you scroll sideways, vertically, and just generally navigate with precision and intuition. And when you’re done, the mouse flattens into a remote-ish form that’s rather easy to slip into bags without occupying any bulk!