Although there are varies of wireless mouses which are easy to use,but they will still use an USB , you know ,we've got only 2 USB in the newest macbook air, so I wonder if there is a bluetooth one , I've found that most bluetooth ones are released for years,and haven't got any update,the magic mouse was released in 2009 or 2010 and it is hard to use in Windows. And the most awful is that most bluetooth mouses get a delay, that means when I move the mouse for nearly a second the mouse in screen will move.....terrible! It is slower than my operation anytime..............