2.2GHz quad-core Intel Core i7 with 6MB L3 cache (Turbo Boost up to 3.4GHz). 16GB of 1600MHz DDR3L SDRAM. 256GB of flash storage. Retina display: 15.4-inch (diagonal) LED-backlit display with IPS technology, 2880 by 1800 pixels. Intel Iris Pro Graphics. Built in Face Time HD camera. Two Thunderbolt 2 ports; support for high-speed I/O and Mini Display Port devices. 5DXC Card Slot, HDMI port, two USB 3 ports. Headphone port, built-in stereo speakers. 802.11ac Wi-Fi and Bluetooth 4.0 Backlit keyboard and ambient light sensor Preinstalled OS x, Pages, Numbers, Keynote, iPhoto, iMovie and GarageBand. Size 35.9 x 24.7 x 1.8 cm. Weight 2.02kg.