Well ... My mouse makes clicking sounds. No loud or unpleasant (ie no defect) but clearly audible. Very unfortunate.
But otherwise it works fine. After plugging the Bluetooth receiver and turn on the mouse, it is immediately recognized and can be used. The scanning is done, felt, very precise. Despite great hands, she is well and comfortable to hold.
Whether I have the scan really works on all surfaces not tested and is not matter for me.