Review on Renewed Logitech MX ERGO Advanced Wireless Trackball for Windows PC and Mac by Eh Chit ᠌

You need to use it with a tablet and some kind of external keyboard. With its pros. Cool assembly, the mat is no longer needed, in fact, the mouse can be kept in bed next to the laptop, as you move your finger along the trackball. Switch to the second device, where it can work as a bluetooth. Cons: Long adaptability, I miss the line quite often when moving the trackball. Only two angles of inclination, the diagram in the instructions is not entirely clear, perhaps you can still change the angles according to the instructions, but I did not understand how.