I love the feel of typing on this keyboard - it's got minimal travel and just enough clickiness to provide good feedback, without the noise and travel of a mechanical, and a good solid weight that doesn't move across the desk. Definitely not silent - it echoes somewhat in my large office. My main complaint is that in reducing the spacing, they've made it difficult for professional users. There's no space between the number keys and function keys, and they've eliminated the spacing between groups of 4 function keys. So professional users who need these all the time now need to resort to modifying the keyboard to type by touch with these keys.
Battery drains faster than expected under normal use. If you’re needing to charge multiple times a day or dropping significant percentage within a few hours, that’s below standard performance for most modern devices.
Love the feel of the scissor keys, nice heavy weight, could care less about wireless, don't like light escaping around base of keys if looked at other than straight down upon, don't like back light shutting down after such short time to save battery, don't like fumbling around in the dark trying to get lights back on by tripping keyboard's 'sensor' without adding a random letter, symbol or keystroke to whatever I’m working on. It is a very nice regular wireless keyboard, but if your main reason for buying it is the back lighting, look elsewhere. Note my old (10 years) Logitech illuminated had none of these problems but isn’t made anymore. This keyboard was a backwards move, not an improvement.
This is an almost great keyboard. Silent, good key feel, and a good layout and key spacing. It's got a good weight--not too light and the keys are well marked. The symbols are a bit hard to read without the backlight because of lower contrast between the not-black key bodies in the graphite model and the not white translucent symbol markings. It's a very pleasant keyboard to use. It's dragged down by just a few things: 1) very disappointing battery life--my previous BT, not BTLE, wireless keyboard with a fingerprint reader, from a famous software company and used-to-be-keyboard supplier, could go six months or more between charges, this one barely makes two weeks with only a few hours of use daily. If I used it all day, I suspect it wouldn't make a week. And I have the backlighting turned way down and set for a short timeout. 2) It should work as a keyboard over USB for the case of a PC in UEFI. 3) It should have a pocket for storing its Bolt receiver so it doesn't get lost before the next time you need to use it when the PC is in UEFI.
Another amazing product that fits alongside my Logitech MX master 4 and MX Master 3S and other logitech products. I don’t know how they’re going to make the next model better than this, but I’m excited to see what comes out!