Very nice keyboard and class design, even if it was made by Logitech. The keyboard and mouse are switched off when not in operation via a small switch or button (mouse), so you can conserve battery life somewhat. The design is very good. The Tastaur is small and discreet, but still very easy to operate, the buttons are good (not too tight) so that you can write with 2 hands as with standard keyboard and missed no letters or exceeds 2 letters with one. Is only to complain that there are for Schifttaste (conversion key) and numeric keypad no LED or labeling for activation, a shame. The receiver has been with it, and by its small size, it does not have to be permanently removed from the USB slot. He can even at a laptop are always tuned and does not loosing. I can happily recommend the keyboard. The mouse is also very good and ergonomically in the hand, but this is something, taste, a matter of opinion. She left / right button - the middle scroll wheel and both the left and right side still a small button for fast scrolling.