The Wireless Mobile Mouse 3000 from Microsoft is genuine the hammer.Er has its full-sized keys with scroll click what I prefer because you do not really need more and thus the mouse clearer ist.Er is by its shape and on the side perfectly in the rubber hand and thanks to the blutooth wireless transmission at 2.4 GHz has no annoying cables and control is indeed 1000dpi very direkt.Die The supplied battery (Duracell) promises 10 months, but is impressive in reality only 7, which is still I think nach.Also I would recommend the mouse anyone who is looking for a mouse that simple, chic in design is very good in the hand and is very direct and of course where the price - performance ratio is perfect.