15-inch Mac book Pro with Retina Display (Tech Specs).

Display

Retina display: 15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 resolution at 220 pixels per inch with support for millions of colors.
Native resolution: 2880 by 1800 pixels (Retina); scaled resolutions: 1920 by 1200, 1680 by 1050, 1280 by 800, and 1024 by 640 pixels.

Processor

2.5GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache.

Memory

16GB of 1600MHz DDR3L onboard memory.

Storage

256GB or 512GB PCIe-based flash storage.

Size and Weight

Height: 0.71 inch (1.8 cm), Width: 14.13 inches (35.89 cm), Depth: 9.73 inches (24.71 cm), Weight: 4.49 pounds (2.04 kg)

Graphics and Video support. 

Intel Iris Pro Graphics or Intel Iris Pro Graphics and AMD Radeon R9 M370X with 2GB of 

GDDR5 memory and automatic graphics switching.

Connections and Expansion.

 

Wireless

Wi-Fi and Bluetooth.

Battery and Power

Up to 9 hours iTunes movie playback   
Up to 30 days of standby time   
Built-in 99.5-watt-hour lithium-polymer battery 85W 
MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port

For more information - http://www.apple.com/macbook-pro/specs-retina/