All my life I have been buying Logitech, but apparently it's time to look for alternatives. I put 2 stars only out of respect for the brand, which is inexorably fading away. PS. I have been using keyboard for 10 months. With its pros: looks solid, tactilely pleasant, quiet, relatively long life on a single charge, uniform illumination Got cons: 1. The quality is questionable, the junction of the black surface with buttons and aluminum on top - waves, you can see where there are latches. And this is a keyboard for a lot of money. For the keyboard - especially. 2. There is no way to clean debris without breaking the fastening of the buttons. One button began to work hard for me, I unfastened it, I thought the garbage got in - now there is no button. 3. The wheel is beyond words. We can safely say that it is for beauty.