This refurbished Apple 11.6 in. MacBook Air Notebook Computer is ultralightweight. The system has 128GB of flash storage instead of an old-fashioned hard drive. The MacBook Air is housed in an aluminum unibody enclosure, which is as strong as it is light and features a glossy finish and LED backlight technology for enhanced image quality and energy efficiency. The 16:9 display features a native resolution of 1366 x 768. This computer features a standard-size backlit chiclet keyboard. It also has a large multitouch glass trackpad, giving you full control over your computer. The computer is powered by a dual-core 4th-gen, 1.4GHz Intel Core i5 processor and has 4GB of onboard 1600MHz LPDDR3 RAM. Graphics are provided by integrated Intel HD Graphics 5000. The computer features all the amenities you expect on a Mac—a FaceTime HD webcam, dual-band 802.11ac Wi-Fi, Bluetooth 4.0 and built-in stereo speakers. The Mac OS X features Time Machine backup, which automatically backs up system data to an external hard drive and has been upgraded to 10.11 El Capitan.