Features:Used (see below for description)Aluminum enclosureMac OS X version 10.9.5 pre-installedIntel 4th Gen Haswell Core i5-4260U Dual-Core 1.4GHz CPU2.7 GHz Max Turbo Frequency, 3 MB Intel Smart Cache4GB 1600MHz LPDDR3 RAM128GB Solid State Drive (SSD)Integrated Intel HD Graphics 5000Integrated audio with built-in speakersDual microphonesAirport Extreme 802.11ac Wi-Fi networking (IEEE 802.11a/b/g/n compatible)Built-in Bluetooth 4.0Built-in 720p FaceTime HD cameraKeyboard with a multi-touch trackpad13.3" LED glossy widescreen display (1440 x 900 resolution)I/O Ports:Two (2) USB 3.0ThunderboltHeadphone out mini-jackBattery Specifications:Lithium-ion Polymer type38WhUnit Dimensions:0.11 - 0.68 x 11.8 x 7.56-inches (H x W x D, approximate)Weight: 2.38 lbs.Package Includes:Apple MacBook Air 13.3" LED NotebookPower adapter