I had an immediate need for a keyboard that was specifically of the bluetooth version; nevertheless, the selection of such keyboards was unexpectedly limited. I had second thoughts for a considerable amount of time because, after all, the cost of the keyboard is rather costly; nonetheless, a huge number of positive reviews and the fact that there were not many other options available in stores nearby helped to sway my decision. Although it appears to be lightweight, the keyboard is actually quite heavy—especially for one that has such a flat appearance. This came as a pleasant surprise: the keyboard stays put on the table like a glove and does not move around on the surface even when the user is typing with a great deal of frustration:) Because of the slightly unique placement of the Fn function key in comparison to that of a laptop and the close proximity of the Cntrl key to it, I initially kept touching the Fn key instead of the Cntrl key. On the laptop keyboard, the letter "E" is located immediately next to "Enter," and here between "Enter" and "E" there is a key with slash until she got rid of the habit of hurting her. This is a similar one, for some reason, when blindly typing, I constantly touch the key with a slash, which is located near the main "Enter" key. Personally, I have no issues with the lighting; during the day, I work near the window, so I don't require more illumination; nonetheless, the lighting in the evening is wonderful. In contrast to the vibrant red lighting of the laptop, this one has a more intimate feel about it. The Logitech software that comes with this keyboard allows for the F-keys and the keys that are located above the number pad to be remapped. The Pause / break key is not there on the keyboard, and I was unable to configure it using the Logitheca program because it was not one of the available options. I find it frustrating that I am unable to utilize this key in my job because it is not present on the keyboard. This is a little drawback, but it is not a deal breaker because there is a shortcut on the keyboard (Fn + B). The sound of pressing is pleasing to the ear (although quite loud), and the sensation under the fingertips is a little bit springy. The amount of time it may be used before needing to be charged is satisfactory: after taking it out of the packaging for the first time, it needed to be charged in two weeks.