Apple MacBook Air Core i5 Processor (1.7GHZ) 4GB RAM 64 GB FLASH SSD HD 11.6” Display OS Mojave (Can upgrade to OS Catalina) MD223LL/A Functions perfectly! A grade condition... a few minor scratches on top / back case. A small scuff on top case (can’t really see it). Extremely small ding on back case (very minimal). MD223LL/A Perfect for school, work, streaming, general use, some gaming, etc. Very quick unit running the Mojave. It can run OS Catalina through a free download on app store (I can install OS Catalina for free before shipping if requested... takes 30 minutes). Excellent unit! Ships quick with tracking via USPS and comes with a charger!