Specification: Brand new and high quality. Operating Voltage:5V Input Voltage (recommended) :7-12V Input Voltage (limits) :6-20V Digital I/O Pins :14 (of which 6 provide PWM output) Analog Input Pins: 6 DC Current per I/O Pin :40 mA DC Current for 3.3V Pin :50 mA Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader SRAM : 2 KB (ATmega328) EEPROM :1 KB (ATmega328) Clock Speed :16 MHz Package included: 1x Microcontroller ATmega328 NOTE:As the effect varies from monitor to monitor, there is irrevocable slightly difference in colors between the color showed on your monitor and the real one, So if dear you can not accept this very little difference, be cautious before you making the orders.thanks for understanding.