Worst quality and it doesn't work at all with the unifying receiver on two PCs that I tried it on. I do not recommend it at all.

I was looking for a keyboard for my office!! I really found a gem!! It has exactly what I need!! Multimedia buttons and a numeric keypad!! Big Enter key and big F keys! And of course, Logitech! I don't have an opinion yet on battery life... we'll see!
The code is 920-003738 K270, I think the other one has a small Enter key but I'm not sure..

I bought it during the time of the coronavirus, mainly trusting the comments of others, maybe also the reputation of Logitech.
As soon as I got it in my hands and opened it, I thought I went back to the 80s! Not even my grandmother had such an outdated keyboard.
Tragic in appearance, feel, touch, and use. Skip it and don't bother with this particular model again. Stay away!

I have two of these and have been using them on a daily basis for years. They are full-sized keyboards, so nothing feels unfamiliar. The batteries last for many months, and I have never had any issues with the range (2 to 5 meters in my case). The multimedia keys are convenient, located above the function keys array, along with the separate numeric keypad and the illuminated Caps Lock indicator.

I have paired the K270 with M235 mice using the Unifying receivers without any problems, so for each K270/M235 pair, I need one USB port.

I highly recommend it.

Excellent wireless keyboard with full letters and numbers, very good build quality, and after 3 years it continues to function without any problems, even in a Linux environment. Using a unifying receiver, I have connected both this keyboard and the mouse (which is also Logitech).

It suited me very well for writing.
These styles are not suitable for heavy work (e.g. gaming).
The K270 has the same functions as the K120, the only difference is that it has multimedia keys and it is wireless, while all the other keys, etc. are the same...
Its quality is very good, as well as its performance.
Logitech is what it is, no matter what.
It has been producing cheap and quality tools for years!
I have had it for 2 and a half years... I am waiting for another one to arrive...
I am very satisfied.