As usual fast delivery by Amazon ;-) I'm curious when this wretched blister disappear ... unpacking the mouse always proved to be the most difficult task for a violation .. well ... HAMA should do without it ... The pairing of the mouse was on my laptop with Toshiba BT stack no problem. Let search appliance, press the pairing button of the mouse, enter the Key (0000) and everything was done. The mouse fits comfortably in your hand, is running a bit too fast, but still good to handle for my taste. The problems described in the first review, I can not understand abolut, on a white sheet, no problem, on the living room table no problem, everything is fine (not tested glass-guess that also makes problems). Only when you some time (from ner minute !?) does not use in PC work brauchts a few seconds until the mouse re-runs on the screen ... obs on the mouse or on the Bluetooth stack is I do not know, but certainly not a big problem (as long as you do not necessarily Reaction games played where it depends on rapid availability) Therefore, brow of the price goes the power OK