Display Retina display: 13.3-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1600 resolution at 227 pixels per inch with support for millions of colorsNative resolution: 2560 by 1600 pixels (Retina); scaled resolutions: 1680 by 1050. 1440 by 900. and 1024 by 640 pixels Processor

Display Retina display: 13.3-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1600 resolution at 227 pixels per inch with support for millions of colorsNative resolution: 2560 by 1600 pixels (Retina); scaled resolutions: 1680 by 1050. 1440 by 900. and 1024 by 640 pixels Processor 2.7GHz2.7GHz dual-core Intel Core i5 processor (Turbo Boost up to 3.1GHz) with 3MB shared L3 cache Memory 8GB of 1866MHz LPDDR3 onboard memory Storage 128GB PCIe-based flash storage Size and weight Height: 0.71 inch (1.8 cm)Width: 12.35 inches (31.4 cm)Depth: 8.62 inches (21.9 cm)Weight: 3.48 pounds (1.58 kg) Graphics and video support Intel Iris Graphics 6100 Camera 720p FaceTime HD camera Connections and expansions MagSafe 2 power portTwo Thunderbolt 2 ports (up to 20 Gbps)Two USB 3 ports (up to 5 Gbps)HDMI portHeadphone port Wi-Fi 802.11ac Wi‑Fi wireless networking; IEEE 802.11a/b/g/n compatible Bluetooth Bluetooth 4.0 wireless technology Audio Stereo speakers.Dual microphones.Headphone port Keyboard Full-size backlit keyboard with 78 (U.S.) or 79 (ISO) keys. including 12 function keys and 4 arrow keys (inverted "T" arrangement) with ambient light sensor Trackpad Force Touch trackpad for precise cursor control and pressure-sensing capabilities; enables Force clicks. accelerators. pressure-sensitive drawing. and Multi-Touch gestures Battery and power Up to 10 hours wireless web.Up to 12 hours iTunes movie playback.Built-in 74.9-watt-hour lithium-polymerbattery.60W MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port Operating system OS X Yosemite