The model is interesting, there are many keys, in general, the layout is almost like on a classic keyboard. Without backlight it can work for weeks, with backlight it lasted only a week. I recommend to buy. Pros: Convenient, there is a context menu, switching between 3 devices, Bluetooth and USB support, backlight, programmable keys Cons: Heavy, it's a pity that only 3 devices can be connected, no Pause Break, large size, Corona constantly interferes, high price