The blue light of the LEDs is so uncomfortable that we could not keep the keypad. With white illumination or surcharge happy with RGB, I would have loved this keyboard securely. There are still a few problems, for example, the volume control is not well thought out. Since the wheel, as in the current Logitech keyboards is missing. The software window can not be enlarged, so that nothing can be seen on high-resolution monitors. Who feels the blue light on duration than pleasant, which can access here. We have not endured the blue.
