- It is 100% compatible with Arduino UNO R3 program, expansion shields, IDE;

- The 9V battery case which is special for Arduino Board can supply power for UNO R3, and there is 5V voltage regulator circuit on the motherboard, so it allows you to show your projects in the outdoor without the PC;

- You can burn the program with your mobile phone’s micro USB cable;

- It use the micro USB socket which it is very short, so it is compatible with more expansion boards;

- On-board test indicator LED, and the beginners can program to control it;

- USB interface driver chip: CH340G;

- Microcontroller: ATmega328P;

- Operating voltage: 5V;

- IO logic voltage: 5V;

- Operating current: 500mA;

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

- Flash Memory: 32KB of which 2KB used by bootloader;

- SRAM: 2KB;

- EEPROM: 1KB;

- Clock Speed: 16MHz.