Installed OS is MacOS Ventura. I had a clear case on it for as long as I’ve had it, so it’s in great condition. There are a few cosmetic imperfections on the sides of the device though (shown in the photos). I’ll also ship with the case on it if you’d like! It doesn’t include a charger but I wouldn’t use the Apple OEM charger that it comes with. There are power bricks online that have newer technology which make them smaller and are also cheaper (make sure they are at least 65W GAN).Feel free to message me if you have any other questions. Thank you.