Hello this is a MacOS sequoia its 27” inch with a processor of a Intel core i5 6th gen and a radeon Pro 575X 4GB with 16 GB of DDR4. It does have 1 minor crack on the top right as shown in the photos. Which doesn’t affect anything on the desktop. Other than that everything is in perfect condition it works and runs like lightning been a blast playing videos games and school work on this.