• ATmega32U4 running at 5V/16MHz; Compatible with Arduino IDE v1.0.1
• 4 x 10-bit ADC pins, 12 x Digital I/Os;Rx and Tx Hardware Serial Connections
• On-Board Micro-USB connector for programming
• Pay attention to : 1.When you open the for Arduino IDE software, could you please go to the tool and choose the board "for Arduino Leonardo"
• 2: The acceptable voltage range is 6 to 9 V.