The 11.6" MacBook Air Notebook Computer from Apple is an ultraportable notebook computer with a thin and lightweight design. Apple's engineers have leveraged the lessons they learned in designing the miniaturized iPad and applied them to the design of this 2.38-pound computer. *** The MacBook Air is housed in an aluminum unibody enclosure, which is as strong as it is light. Because it is cut from a solid block of aluminum, the housing is stronger than those found on laptops built via traditional means. *** At 11.6" in size, the 16:9 display features a native resolution of 1366 x 768. It features a glossy finish and LED backlight technology for enhanced image quality and energy efficiency. *** Computers in the MacBook Air's weight class are most often classified in the "netbook" category. Netbooks typically feature less-than-full-size keyboards, cramped trackpads, and low-powered CPUs. Not so with the MacBook Air. This computer features a standard-size backlit chiclet keyboard, the same as on the larger computers in the MacBook line. It also has a large multi-touch glass trackpad, giving you full control over your computer -- without sacrificing ergonomics. *** This MacBook Air comes preloaded with the user-friendly Mac OS X operating system. The Mac OS X features Time Machine backup, which automatically backs up system data to an external hard drive. It also features natural scrolling, the Launchpad application launcher and support for full screen applications. Mission Control combines the functionality of Dashboard, Exposé, and Spaces -- giving you a bird's eye view of everything that is happening on your computer. *** The Auto Save feature on the MacBook Air ensures that you won't lose data, even when you forget to save a file. The OS tracks different versions of your documents, so you can go back to a previous draft of a document with ease.