Specification:

■ Microcontroller Atmel ATmega328
■ Operating Voltage (logic level): 5V
■ Input Voltage (recommended): 7V ~ 12V
■ Input Voltage (limits): 6V ~ 20 V
■ Digital I/O Pins: 14 (of which 6 provide PWM output)
■ Analog Input Pins: 8
■ DC Current per I/O Pin: 40mA
■ Flash Memory: 32KB (ATmega328) (of which 2 KB used by bootloader)
■ SRAM: 2KB (ATmega328)
■ EEPROM: 1KB (ATmega328)
■ Clock Speed: 16MHz

Note:
This version is not included the USB cable.
Had change the USB chip, improve the download speed and stability of WIN7/WIN8