Apple MC975LL/A 2.3 GHz 15.4 MacBook Pro with Retina Display

Apple MC975LL/A 2.3 GHz 15.4" MacBook Pro with Retina Display Operating System: Mac OS X v10.7 Lion Resolution: 2880 x 1800 (Retina) LCD Features: Retina display 15.4-inch (diagonal) LED-backlit display with IPS technology 2880-by-1800 resolution at 220 pixels per inch with support for millions of colors Supported resolutions: 2880 by 1800 pixels (Retina); scaled resolutions: 1920 by 1200, 1680 by 1050, 1280 by 800, and 1024 by 640 pixels Memory Speed: DDR3 1600 WLAN: 802.11n Wi-Fi wireless networking IEEE 802.11a/b/g compatible Bluetooth: Bluetooth 4.0 wireless technology Webcam: 720p FaceTime HD camera Battery: Built-in 95-watt-hour lithium-polymer battery