With wireless mouses (mice) costing from 5 to 50 pounds or more, there clearly must be differences between them. However this one does exactly what you would expect a mouse to do (other than eat your cheese!) and does it perfectly. The nano tranciever, which can be stored in the mouse if needs be, was a very snug fit into a USB socket; so snug that at first I wondered if it was a different fitting, but with a firm push it fits OK. This is the only reason I don't award it the maximum 5 stars. A laptop should easily fit into a carry case with the tranciever left in position. Build quality is excellent.
Tranciever fitted, activate battery (supplied) and the computer picked it up instantly. Works smoothly and accurately, far better than my old Microsoft, optical, corded mouse.
Looks smart in red and black, and have no qualms about recommending this item. My wife now wants one, and at this price, why not?