Processor: 2.6GHz dual-core Intel Core i5 processor (Turbo Boost up to 3.1GHz) with 3MB shared L3 cache)

Memory: 8GB 1600MHz DDR3L SDRAM

Display: Retina display: 13.3-inch (diagonal) LED-backlit display with IPS technology 2560-by-1600 native resolution at 227 pixels per inch with support for millions of colors Scaled resolutions: 1680 by 1050, 1440 by 900, and 1024 by 640 pixels

Storage: 256GB flash storage

Size and Weight:

Height: 0.71 inch (1.8cm)

Width: 12.35 inches (31.4 cm)

Depth: 8.62 inches (21.9 cm)

Weight: 3.64 pounds (1.57 kg)

Graphics and Video Support: Intel Iris Graphics

Thunderbolt digital video output

Native Mini DisplayPort output

DVI output using Mini DisplayPort to DVI Adapter (sold separately)

VGA output using Mini DisplayPort to VGA Adapter (sold separately)

Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)

Camera: 720p FaceTime HD camera

Connections and Expansion: 

MagSafe 2 power port

Two Thunderbolt ports (up to 10 Gbps)

Two USB 3 ports (up to 5 Gbps)

HDMI port

Headphone port

Wireless:

802.11n Wi-Fi wireless networking;3 IEEE 802.11a/b/g compatible

Bluetooth 4.0 wireless technology

Audio: 

Dual microphones

Headphone port

Headphone/optical digital audio output (minijack)

Support for Apple iPhone headset with microphone

Battery and Power: Up to 9 hours wireless web, Up to 30 days standby time

Built-in 74-watt-hour lithium-polymer battery 60W MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port

Included Software: OS X Yosemite 

Includes Mail, Address Book, iCal, the Mac App Store, iTunes, Safari, Time Machine, FaceTime, Photo Booth, Mission Control, Launchpad, AirDrop, Resume, Auto Save, Versions, Quick Look, Spotlight, QuickTime, and more.