Great mouse if I only have the money I could have been the one to make this kind of innovation. Very smooth to use and the scroll button is wide and comfortable, the left click is comfortable and the right click needs a little more pressure to click but that's fine because you don't want accidental right clicking wile working. The numpad is perfect for my laptop and very good to use with a worksheet. It can be used normally when the cover is closed as well as when the cover is open especially when editing worksheets. Button key size is OK, its just about the same size of my laptop keyboard button keys and pressing the keys is very soft ...  Read the complete review