I've always had Logitech mouses, i went to buy another Logitech when my girlfriend saw this Microsoft Mouse with cool design and same price, so i decided to give it a try....what could go wrong with that it's just a mouse, right???? It's just a mouse but........this is my sincerely review. This mouse is really cool, the design, size, the way it scroll up and down on the internet or any folder but............you know when you are looking to your pictures and you want to give a little zoom or just zoom on it??? FORGET IT you have to scroll up and down very very fast and still wont go the way you want and you must be an Ogre to use the zoom. I bought one and my girlfriend bought another one, when we get home, i thought mine came with problem and i started use hers and i realized it's the mouse. DON'T BUY THIS MOUSE, look for another one or go for logitech they work much better. READ THE REVIEWS FROM OTHER USERS ON DIFFERENT COLOURS...THEY ALL SAY THIS MOUSE DIES AFTER 2 WEEKS OR 2 MONTHS, SHAME ON MICROSOFT.