Retina display 13.3-inch (diagonal). LED-backlit display with IPtechnology. 2560 by 1600 native resolution at 227 pixels per inch with support for millionsof colors. Supported scaled resolutions: 1680 by 10501, 440 by 900, 1024 by 640. 16 : 10 aspect ratio. True Tone technology. Integrated Touch ID sensor. Processor 1.6GHz dual-core. Intel Core i5. Turbo Boost up to 3.6GHz, with 4MB L3 cache. Storage of 1128 GB. PCIe-based SSD. Configurable to 256GB, 512GB, or 1TB. SSD256GB. PCIe-based SSD. Configurable to 512 GB or 1 TB SSD Memory. 8GB of 2133MHz LPDDR3 onboard memory. Configurable to 16GB of memory. Battery and Power2Up to 12 hours wireless web. Up to 13 hours iTunes movie playback. Up to 30 days of standby time. Built-in 49.9‑watt‑hour lithium‑polymer battery. 30W USB-C Power Adapter; USB-C power port. Height: 0.41–1.56 cm (0.16–0.61 inch), width: 30.41 cm (11.97 inches), depth: 21.24 cm (8.36 inches). Weight: 1.25 kg (2.75 pounds). 3 30.41 cm, 1.56 cm. Graphics Intel UHD Graphics 617 Support for Thunderbolt. 3–enabled external graphics processors (eGPUs). Video Support simultaneously supports full native resolution on the built-in display at millions of colors and: One external display with 5120-by-2880 resolution at up to 60Hz. Up to two external displays with 4096-by-2304 resolution at up to 60Hz.