For its price (15€-20€), it is of good quality.
The only negative thing I would say is the occasional sudden disconnections it causes on our PS2.

Simply tap the buttons and it automatically synchronizes. It's amazing how it stays up to date. I went to check its name in case I need to sync it again.

Good incredible. Good for the PC. I liked it a lot. It's been a week and everything is going perfectly. Get it. It's for PS2/PS3/PC

I have had it for 3 years, it works perfectly fine, I use it on my computer and on the PS2. I didn't receive a defective one, maybe I was lucky. It needed cleaning, but it works flawlessly. However, it's not worth 30€. It's good that I got it for 15€

Really feels like I threw 30 euros in the trash (because I bought 2). Where do I start? The PC didn't recognize them.. there were no CD drivers.. I sent an email to the company asking if they could help me by sending the drivers, but they didn't send them to me.. on the contrary, they told me it's a problem with my computer.. After a lot of searching, I found drivers online. After 6-8 months of having them, they no longer work because the USB doesn't make contact with the flash drive inside.. and I've even changed 2-3 USB ports thinking that might be the issue, but nothing.. Stay away for your own good..

-The cable for the controller is very short.
-It only works in specific points, meaning that if I am further away or slightly to the right and not directly in front, it can press buttons on its own (changes player, gives passes, etc. without me pressing anything).
-No matter how you shake it, it still presses things on its own (mainly changes player, gives passes on its own in PES).
Try something else from a distance

Recently I bought a pair of original Sony Dual Shock 2 (SCPH 10010) controllers, but to my surprise, I noticed that the length of the cable was only 1.60 meters instead of the 2.40 meters I had before. Monkey business? Well, maybe, but it wasn't noticeable at all.
Of course, if the cable is not longer than your height, forget about playing lying down. The Gembird controller solved my cable problem and hassle. I mainly got it for RPG and turn-based strategy games that don't have demanding response requirements. It performed excellently!
So, I gathered the courage and tried a couple of beat 'em up games. It was amazing! Comfortable movements and flawless combos, even better than the original Sony controllers.
I thoroughly enjoyed playing the all-time classic Streets of Rage II.
No complaints. Now, we'll see if it can withstand the test of time like the immortal Logitech controllers, although I have my doubts, especially if it kisses the floor during some unfortunate moments.

P.S. I didn't have any issues with the battery cover. However, it is a piece of plastic that is cheap and delicate. It attaches securely in its own way. If you handle it carefully, there shouldn't be any problems. At least, in the 10 days that I've had it, it's been fine.

Update - July 9, 2019:
After a few hours of gameplay, it lost synchronization with the receiver. I couldn't restore it. It's a shame because everything I mentioned earlier still holds true. I can return it, of course, but I'm not sure if I will. It disappointed me.

Amazing purchase. I bought two and turned my computer into a Playstation (which was constantly giving me trouble). You can download any game you want (PC games: FIFA, PES, etc.) and have everything. Goodbye Playstation. Well, if we exclude the battery cover that I taped from the first moment because it was coming off easily, I can say that it is durable. I would highly recommend it.