Specifications
Screen size: 27 inches (diagonal viewable)
Screen type: TFT Active-Matrix LCD with in-plane switching (IPS)
Resolution: 2560 by 1440 Pixels
Colors: 16.7 million
Aspect ratio: 16:9
Viewing angle: 178° horizontal; 178° vertical
Brightness: 375 cd/m2
Contrast ratio: 1000:1
Response time: 12 ms
Connectors: Mini DisplayPort, USB 2.0, Universal MagSafe
Other Features: Built-in iSight with microphone, 2.1 speaker system (49 watts)
Dimensions: 19.35 H x 25.7 W x 8.15 D in.
Weight: 23.5 lbs. More download here