WINDOWS All its specifications are in the pictures shown above. I bought it from Jarir. My usage period for it was one academic semester. It's very clean, no defects. My usage was light, only for AutoCAD and 3ds Max. But it doesn't come with a charger 😇 I bought it for 3600, I'm selling it for 3000. Operating System: Windows Brand: Asus Screen Size: 16 inches Processor Type: AMD Ryzen 7 RAM Size: 16 GB