Apple MacBook Pro MD212LL/A 13-Inch Laptop with Retina Display (OLD VERSION) 2.5 GHz dual-core Intel Core i5 processor (Turbo Boost up to 3.1GHz) with 3MB shared L3 cache 8 GB of 1600MHz DDR3L onboard memory 128 GB Flash Storage 13.3 inch LED-backlit Retina display, 2560-by-1600 native resolution, Intel HD Graphics 4000 Mac OS X Mountain Lion, 7 Hour Battery Life. Item comes with 10.8 version of the OS