1. Of course, instant switching between devices (in my case, a computer on Windows via Unifyng, Iphone X and Ipad 2 mini. The reviews wrote that there were problems if the devices were connected via different channels, but in my case everything is clear. Switches to Unifyng no delay at all, on the Iphone no more than a second.
2. Pretty quiet, but I don't really have anything to compare it to. Before that, there weren't any good keyboards;
3. Through the Unifyng receiver, a Logitek mouse, bought separately a year ago, was also connected (there is an icon on the mouse that is compatible with Unifyng)
4. Blind typing without any problems, even with a small left shift;
5. It was possible to adjust that punctuation marks would be printed on the Iphone on the same keys as on the PC on Windows. By default, this is not the case, a comma and a period, for example, are printed via Shift on 6 and 7. But when the keyboard is connected, the physical keyboard settings appear in the Iphone keyboard settings and there you can change it to "2022 - PC".
6. Stand for the phone - a trifle, but nice and functional.