I must say that this Laser Bluetooth Mouse Lenovo is really the best Bluetooth mouse that I've ever owned. I've bought the mouse to reduce the clutter on my desk. Although I also like to work with the trackpad of my Macbooks, but an external mouse is solely for reasons of ergonomics mostly practical. Since I already known this mouse from a friend, I knew about the size, which is between a regular mouse and a small travel mouse. For large hands so she could possibly be too small. The surface feels pleasant. On Mac OS X, the mouse is in any case recognized without problems and is working properly. I am using the mouse much more content than the original Apple Magic Mouse or the trackpad, which I have both sold again. Although the appearance does not fit perfectly to the Mac, but that is secondary for me. Hint: The program BetterTouchTool for Mac, you can assign individual functions to three extra buttons on the mouse wheel (left, right, central click) yet. Strong buy recommendation from me.