Retina display with 2560-by-1600 resolution Fourth-generation dual-core Intel Core i5 Intel Iris Graphics Up to 9 hours Faster flash storage2 802.11ac Wi-Fi Two Thunderbolt 2 ports for connecting high-performance devices and transferring data at lightning speed Two USB 3 ports (compatible with USB 2 devices) and HDMI FaceTime HD camera Pages, Numbers, Keynote, iPhoto, iMovie, GarageBand included OS X, the world’s most advanced desktop operating system 1 Battery life varies by use and configuration.