This UNO R3 compatible board uses the ATmega328P microcontroller running at 16 MHz, with 32 KB flash memory and 2 KB SRAM. It has 14 digital I/O pins (6 with PWM) and 6 analog inputs, and works with the Arduino IDE and its huge library ecosystem.
Power it over USB or from an external supply (7–12V recommended). The included cable lets you program it straight away, making it ideal for students, beginners, robotics clubs and makers.