This is Nano V3.0 microcontroller board, it is Compatible for Arduino Nano V3.0.

 An open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board. 

Summary:

Microcontroller:                            Atmel ATmega328

Operating Voltage (logic level):     5 V

Input Voltage (recommended):      7-12 V

Input Voltage (limits):          6-20 V

Digital I/O Pins:        14 (of which 6 provide PWM output)

Analog Input Pins:        8

DC Current per I/O Pin:    40 mA

Flash Memory:             32 KB (ATmega328) of which 2 KB used by bootloader

SRAM:                    2 KB (ATmega328)

EEPROM:                  1 KB (ATmega328)

Clock Speed:              16 MHz

Dimensions:               0.73" x 1.70"

What you get: