The Due is Arduinos first ARM-based Arduino development board. This board is based on a powerful 32bit CortexM3 ARM microcontroller made programmable through the familiar Arduino IDE. It increases the computing power available to Arduino users keeping the language as compatible as possible so that many programs will be migrated in a matter of minutes.

Specifications:
Microcontroller: T91SAM3X8E
Operating Voltage: 3.3V
Input Voltage (recommended): 7-12V
Input Voltage (limits): 6-16V
Digital I/O Pins: 54 (of which 12 provide PWM output)
Analog Input Pins: 12
Analog Outputs Pins: 2 (DAC)
Total DC Output Current on all I/O lines:130 mA
DC Current for 3.3V Pin: 800 mA
DC Current for 5V Pin: 800 mA
Clock Speed: 84 MHz
Length: 101.52 mm
Width: 53.3 mm
Weight: approx. 36 g

Arduino Due runs at 3.3V, which is different from Mega 2560 that runs at 5V.
For more information about Arduino Due, go to http://arduino.cc/en/Main/arduinoBoardDue

Package include:
1 x Arduino Due
1 x USB cable

Specs: