A pretty good combo for the 45 euros I paid.
The keyboard looks exactly like the CK 104.
In terms of RGB, as previous users have mentioned, it is not fully RGB. It has 7 colors that it cycles through. Personally, it's fine for me; after all, I don't expect more for this money. It has different modes that switch directly from the keyboard without the use of any software.
The keyboard I chose features Blue switches. As expected, these switches are noisy. For me, this is a positive because that's why I chose them. They have a slightly stiff press and quick return. If you previously had a membrane keyboard, it will take you 2-3 days to get used to it. (Friendly advice: anyone who doesn't want a noisy keyboard should stay away from blue switches. I've read many bad reviews from people who didn't do proper market research and unfairly criticized these switches.)
I would have liked the cable to be a click longer so that I would be comfortable, but for most, it's fine.
In terms of build quality, it is the best there is for this money. After researching, I didn't find any keyboard at this price that is as sturdy as this one.
Now regarding the mouse, I don't have much to say.
It's a simple gaming mouse that looks like the Motospeed V30, but internally they have nothing in common.
It has a button that adjusts the DPI and simultaneously changes the colors. So, it's not practical to synchronize the mouse and keyboard to the same color.
In terms of comfort, I didn't notice any issues. It's quite smooth and doesn't give you the feeling that it sticks to the mousepad.
The side buttons are soft and easy to press.
(Also, on the bottom, there are 2 stickers. Remember to remove them so that it is smoother in use.)
Conclusion:
The keyboard undoubtedly has good quality and appearance. The mouse is nothing extraordinary. It's just okay to get the job done. Personally, I will replace it in the future with a slightly better one that either has software or is more customizable with its RGB. For its price, the set is honest, and there is nothing similar up to 50 euros that competes with it strongly.