So I'll just list the things that I loved about it and the things that I didn't like about it: Liked: + nice and fast response to pressing. + probably high reliability due to the design, specifically, IR optics is more reliable than conventional mechanics, there is nothing to oxidize, there will be no double click on the key. + the whole board is varnishing resistant. + blue switches do not have a very loud click when compared to conventional mechanics (on blue ones) from other manufacturers. Negatives: the keycaps have a poor font that is unreadable! There are no alternative switches available for purchase anywhere. - It has legs from below just in the four corners, there are no rubber feet in the middle, and it can bend if you press on the keyboard with a lot of force. - The LEDs are not shielded, and as a result, it is possible to harm them when removing the keycap using a puller. - The metal panel buzzes with current because a unique spring connects it to the grounding of the board, and the current then travels to the case of the system unit via the USB cable. If the personal computer is not grounded, the keyboard case will experience 110 volts of current pulling it apart. A bothersome reality that can be evaded in one of two ways: either eliminate that spring and cover it with insulation, or ground the personal computer. - superfluous digital block. Without a driver, there is no way to slow down the rate at which the backlight is switching between colors. - The illumination of the keys is poor, and it is unable to highlight the characters on the cakes that are located, for example, in the middle of the keycap or at the bottom!