Bat, a levitating wireless computer mouse, is currently in the research and testing phases for use in preventing and treating carpal tunnel syndrome, a median nerve dysfunction to which many mouse manipulators are susceptible. My prediction is that, if these attempts pan out, when Vadim Kibardin of Kibardin Design ultimately releases the Bat, PC-related cases of carpal tunnel will be eradicated across the board as a mere by-product of every man, woman, and child's play to own a sick-as-Chuck-Norris-leg-wrestling-a-crocodile-while-boxing-a-grizzly-bear floating mouse.
Bat's base works in tandem with the mouse's magnetic ring to achieve its floating effect. I'm not exactly sure how this elevated positioning precludes or eases the havoc other mouses wreak on the median nerve, but presumably there are ergonomics and air cushioning elements at work here that don't really concern me, as I am impervious to all illnesses and maladies, and would be in the category of people buying a Bat because I think defying gravity is rad.
Bats levitate about 1-1/2" above their base when untouched, and a little under 1/2" under a palmar weight of 2.2 pounds. Is that a lot, 2.2 pounds? One time this girl I know had to carry an amputated leg from one wing of a hospital to another and she said it weighed like 40 pounds. I don't know if that adds any insight to the weight of a non-amputated hand, but I'm thinking it does.