Built_in Mouse / laptop mouse

‘Built in Mouse’ is new type of mouse solving the problem we feel when we use touch_pad or mouse with laptop.
Touch_pad is too small to handle conveniently.
So if there is enough space to use mouse, most people will use mouse.
But to use mouse with laptop, we have to carry it everyday-it would be another bothersome.
Built in Mouse is set on the laptop like touchpad.
But it can be seperated from the laptop, so it can be used as a touch_pad and a mouse.