
The Bat looks like a magician's trick, but the technology behind it is simple: magnetic rings keep it afloat, and it hovers 10 millimeters beneath the weight of a user's hand, with a 40 millimeter maximum height when not in use.
The mouse is meant to reduce pressure on the wrist and theoretically lead to a lower incidence of carpal tunnel syndrome.
Would likely be a lot smoother too, without the resistance of a surface.
Levitating Computer Mouse 'The Bat' Aims To Prevent Carpal Tunnel Syndrome