Brand new factory sealed in retail box 2017 latest version with macOS Sierra( or newer) 1.8GHz dual-core Intel Core i5 processor (Turbo Boost up to 2.7 GHz) with 3 MB shared L3 cache 8 GB of 1600 MHz LPDDR3 RAM; 128 GB PCIe-based flash storage Intel HD Graphics 6000; 13.3" screen with 1440x900 resolution; Up to 12 Hours of Battery Life