12.3 inches, indeed much better than the original bmw screen. Seamlessly compatible with the existing system. The interface has a very genuine bmw factory style and displays more information. The central control screen itself runs an android car system. My car originally had a reversing camera, and after installation, it displays directly as well.
Installed the large screen by myself, didn't connect an aux cable, but it could connect to bluetooth directly. Great! Totally worth it.
This product can perfectly replace the small screen of the vehicle, and can retain the old system. The operation is very smooth and there is no lag at all, so it's quite good.
I must say, installing it instantly elevated the whole look. My friends who bought cars at the same time were really envious. They said they'd come to this shop after i'd used it for a while. The customer service was excellent, and i hope it lasts a long time!
