Up to 12 Hours of Battery Life, OS X Mavericks 1.3GHz dual-core Intel Core i5 processor , Turbo Boost up to 2.6GHz 13-Inch LED-backlit Display; 1440x900 Resolution; Intel HD Graphics 5000 802.11ac Wi-Fi Refurbished 13.3-inch MacBook Air 1.3GHz dual-core Intel Core i5 Up to 3x faster Wi-Fi - MacBook Air now supports ultrafast 802.11ac Wi-Fi. When connected to an 802.11ac base station, wireless performance is up to 3x faster than with the previous generation of MacBook Air.2 And your Wi-Fi range improves as well. With Bluetooth technology, you can connect MacBook Air to Bluetooth-enabled devices like speakers and headphones. Even without all the wires, you're totally connected. Thunderbolt and USB 3 - With the lightning-fast Thunderbolt port, you can connect your MacBook Air to the latest devices and displays, like the Apple Thunderbolt Display. But that's not the whole story. MacBook Air also comes equipped with two USB 3 ports, so you can connect the latest USB 3 devices and access a pipeline that's up to 10 times faster than USB 2. With just a few connections, MacBook Air transforms from an ultraportable notebook to a complete workstation.