The keyboard has a very good writing experience and in my opinion, beautiful design.
The range is (at present halfway "sight") very good - for the Tasatur, but also for the mouse. Momementan is set at about 4-5 meters distance to the receiver - no dropouts or latencies.
The mouse ... Yeah ... So, too small, it is not me. Although I'm often unintentionally to the "Next" button, but that's only a matter of practice and is already rare. But what really time ever not going to the wheel. It uses variable and imprecise. Take time to scroll down a paragraph or a film is so impossible ... To navigate through Windows Explorer and on websites is not so tragic. But he who works with Word documents, PowerPoint and other programs that require gradual, precise maneuvering with your mouse wheel will be again and again angry about this totally unnecessary design flaws.
Therefore my conclusion: 4/5 Stars.