MacBook Air is powered by the all-new fourth-generation Intel Core i5 processor. This ultra-efficient architecture was designed to use less power with up to 12 hours battery life (wireless web) and still deliver high performance. Which means not only can you do whatever you want - you can keep doing it for longer than before. In addition, the new Intel HD Graphics 5000 offers up to 40 percent faster graphics - performance you"ll especially notice with games and other graphics-intensive tasks. The dual microphones in MacBook Air are great for when you want to be heard. If you"re making a FaceTime call, for example, the mics reduce background noise from behind the notebook. And when you use Dictation, they create an adaptive audio beam that intelligently adjusts to detect your voice instead of the noise around you. What"s in the box: MacBook Air, 45W MagSafe 2 Power Adapter, AC Wall Plug, Power Cord, Printed and electronic documentation; Mac OS X Mountain Lion, iLife, 1-Year Limited Warranty Features High-resolution display OS X LionSpecifications Intel Core i5 1.3GHz Dual-Core Processor with Turbo Boost up to 2.6GHz 3MB Shared L3 Cache 4GB of 1600MHz LPDDR3 onboard Memory 256GB Flash Storage 13.3-inch (diagonal) high-resolution LED-backlit glossy Widescreen Display, 1440 by 900 resolution Intel HD Graphics 5000 (Dual display and Video mirroring - Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 Pixels on an external display, both at millions of colors) 802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible Bluetooth 4.0 SDXC Card Slot 720p FaceTime HD Camera Integrated Stereo Speakers and Dual Microphones Full-size backlit Keyboard with 78 (U.S.) including 12 function keys and 4 arrow keys (inverted T arrangement) with ambient light sensor Multi-Touch trackpad for precise cursor control; supports in