Good, but there were a number of minor disappointments.
The product is carefully prepared in parts. You need to go to the official website to get the YouTube video of the assembly. Assembly must be meticulous and precise. I only managed to do this on the 2nd attempt (1st attempt: black screen).
The mini-screwdriver supplied is of poor quality: its coarse thread slips in the screws that should enable the final closure (those that are the most delicate and close the plastic case). I had to buy a mini Phillips screwdriver to complete the screwing!
The fan was noisy and, thinking it was rubbing on the plastic of the case, I accidentally broke it when I tried to move it. In the end, I removed it completely. It's not essential with a Raspberry Pi 3B+, which doesn't heat up that much.
It still feels quite thick in the hand, and you can feel the fatigue after a few hours of continuous play.
The battery capacity is slightly below my expectations, but it's still decent.
After a few days of use, I'm starting to have an annoying problem with the analogue joystick, which sometimes moves to the right or left without any action on my part... I'm waiting to see what the manufacturer has to say about this.
To be seen over time...