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 while you can still feel the soft button key click.
This is perfect for business people, accountants and sales people on the move.
The down side is that the corner where the 0 key and enter key is not so comfortable during long use. It could be comfortable if this part will be extended and made more round in order not to feel the sharp corner on my palm during long use. The decimal point key is marked with a comma (,) not a dot (.) but when you press it, it enters a dot (.). The 000 key is fine but I would like it to be remapable. This mouse can be better with a double click button near the scroll button.
All in All this 2in1 Keypad mouse is an 8 out of 10 for me.