Okay, so I' ll start with what annoys me the most, and that' s the backlight. 7 degrees are unnecessary for me because I work in a dark environment and the weakest light is just right, but if you are not sitting directly above the keyboard, you will be dazzled by the backlight that penetrates between the bottom edge of the keyboard and the top surface of the keyboard. In particular, the F series and number series shine through a lot, even in the lowest light it is quite dazzling, while it was enough to sink the keys slightly into the body and this problem could never arise. Shame on Logitech for releasing an otherwise very well made keyboard with such a stupid and unnecessary bug. The second thing that annoys me is the placement of the computer lock in the numeric pad. When subtracting, I always lock the computer without fail, when the keyboard is already playing FN and other shortcuts, so it was enough to keep WIN+L, which can do the same thing as this one EXTRA (or at least stupidly placed key). Another minus is that the keyboard can press a maximum of 6 simultaneously (in some combinations only 5) and this should at least be stated somewhere. And finally, this is NOT a mechanical keyboard, there is normally a rubber cap under the keys that presses on 2 foils with contacts, although they are metal instead of carbon, but they are not switches like in classic mechanical keyboards. Otherwise, the design is classic as on a laptop. The included cable is only good for charging, although it is a data cable, but the keyboard is only charged via it and the computer cannot see it without a dongle or BT, it' s a shame, maybe it will be fixed in a future firmware update. A special " trick" is the armrest, which can be inserted under the keyboard to adjust the angle of inclination. Either from the front and then you have a horizontal keyboard or you put it under the battery cover and then you have a larger angle, personally I like the angle without a pad, which is good because the keyboard has no built-in feet to adjust the tilt. As far as processing is concerned, there is nothing to complain about. It' s a really nice piece of hardware and won' t put a shame on any desk. The keyboard does not twist, creak or bend. It is pleasantly heavy and thus does not tend to travel around the table. The attached wrist rest is pleasantly stiff, it probably has some kind of memory filling, but after the pressure is removed it returns to its original shape quite quickly. The surface is slightly suede to the touch, but otherwise it is rubber, so sweat stains can be wiped off with a damp tissue. Logitech forgave the print on the pad and placed their logo from the bottom of the pad, for that I return one star.