Apple MD831LL/A (Mid 2012) 15.4" Macbook Pro with Retina Display, Intel Core i7-3820QM 2.7GHz, 8GB DDR3, 512GB Solid State Drive, 802.11n, Bluetooth, Mac OS 10.8 Mountain Lion(Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty 15.4-inch LED-backlit Retina glossy widescreen display with edge-to-edge, uninterrupted glass (2880 x 1800-pixel resolution). 2.7GHz InteCore i7 quad-core processor with 8MB shared L3 cache for excellent multitasking. NVIDIA GeForce GT 650M Graphics, 512GB Solid State Drive, 8GB installed RAM (1600 MHz DDR3), Built-in FaceTime HD camera for video chatting Multi-Touch trackpad for precise cursor control with support for inertial scrolling, pinch, rotate, swipe, three-finger swipe, four-finger swipe, tap, double-tap, and drag capabilities, Full-size backlit keyboard, stereo speakers