Apple MacBook Pro ME665LL/A 15.4-Inch Laptop with Retina Display (OLD VERSION) 2.7 GHz Quad-Core Intel Core i7 Processor with Turbo Boost up to 3.7 GHz 16 GB 1600MHz DDR3L Memory 512 GB Flash Storage 15.4-inch Retina Display; 2880x1800 Resolution; NVIDIA GeForce GT 650M Graphics Mac OS X 10.8 Mountain Lion, 7 Hour Battery Life