Quite good, I'm talking about using it on a Mac in combination with the MX Master 3 mouse. Durable, high-quality construction, intense lighting with the significant ability to only turn on the lights when you go to type, for energy saving. Now for the negatives: I have the brown switches that are considered silent but with noticeable feedback. Well, to tell the truth, I don't think these switches are silent, I have changed dozens of mechanical keyboards and I imagine that the small travel distance of the switch in combination with the fact that it "hits" on the aluminum chassis plays a role. Additionally, from intense use, the switches have "softened," for example, the feeling of the click on the letters is gentler compared to the F-keys. Perhaps the most significant negative aspect of this keyboard is that it is "tiring." I write complete texts on it for an everyday 8-hour and more basis, and it significantly strains the upper part of the wrist, so much so that many times I leave it and work with an Apple Magic Keyboard touch. What can I say, maybe it didn't suit my hands (?!)... In contrast, with a Keychron that I also have, I can say that it is definitely more comfortable, as it is considered low profile and has short-low type keycaps, but it still tires. The reason why I don't fully replace it with the Magic Keyboard is the Logitech ecosystem, as I have combined it, as I said, with the corresponding mouse, creating automations, hotkeys, app-oriented settings, and many more. Logitech has a great advantage in this, it works very well and truly increases productivity. Finally, the battery life is very satisfactory. It lasts for about 3 weeks, something that depends about 90% on the brightness setting (how often it will turn on, how intense, and in which mode). In general, I recommend it, but I would say for someone who writes an occasional message, does browsing, general use, and even a little bit of coding. If it is intended for typing complete texts, emails, and many lines/pages of text, then do some research first to be sure.

The 5 stars because I found a keyboard with clicky switches that have the sound they should and help you maintain a good rhythm when typing without disturbing the universe with the sound. Pleasant without excessive noise. The negatives. The buttons, their plastic, have a cheap feel, which I think I can even understand in the press of the button. Yes, and I would say someone should try it beforehand because at the same time it gives you the feeling that the typing you do is lighter. Really strange and I still haven't decided if it's for the better or worse that the keys feel very light "construction with thin plastic. I also saw some comments on the internet that the keys do not change easily, due to the fact that the base of the SpaceBar has a special construction. Acceptable up to this point.
What is not acceptable but with a heavy heart I at least got used to is that the lighting turns off automatically without being able to set the limit yourself. You have to pass your hands over or put them on the keys to turn on the lighting again, but it doesn't happen instantly and in the end it bothers. Otherwise, the connection with multiple devices, key programming, battery life, space savings on the desk, the beauty of the keyboard, and productivity along with an mx Mouse are truly amazing. I hope in an update they fix at least this issue with the lighting, unless I'm mistaken and there is a way, but I haven't found it yet. In conclusion, is it perfect? No, can it be perfect? For the above that I wrote, for me, if it had the lighting adjustment, yes it would be.