For product itself:
She is loud and has a good stop. One notices a clear difference to normal (non-mechanical) keyboards. The brightness levels are appropriate, but the last stage apertures greatly. Unfortunately, even the multimedia keys are missing and you have to make a monkey grip. I find personally a pity. But you probably wanted to make the keyboard is not too large.
Conclusion:
If you look at the price, you have to actually expect more. Especially in quality control. Such errors should not happen. In my opinion, the price is about 40 too high.
