Display : Retina display
12-inch (diagonal) LED-backlit display with IPS technology
2304-by-1440 resolution at 226 pixels per inch with support for millions of colors
16:10 aspect ratio
Supported scaled resolutions: 1440 by 900,1280 by 800,1024 by 640
Processor: 1.3GHz 1.3GHz dual-core Intel Core i5, Turbo Boost up to 3.2GHz, with 4MB L3 cache
Configurable to 1.4GHz dual-core Intel Core i7, Turbo Boost up to 3.6GHz, with 4MB L3 cache
Memory:8GB of 1866MHz LPDDR3 onboard memory Configurable to 16GB of memory.
Graphics and Video Support:Intel HD Graphics 615 Dual display and video mirroring: simultaneously supports full native resolution on the built-in display and up to 4096-by-2304 resolution at 60Hz on an external display, both at millions of colors.
Wireless: Wi-Fi 802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
Bluetooth:Bluetooth 4.2 wireless technology
Operating System:macOS High Sierra