Specifications:
1- Dimensions: 1.9″ x 0.7″ / 48mm x 18mm
2- Weight: 6.5g
3- Microcontroller: ATmega32u4
4- Operating Voltage: 5V
5- Input Voltage (recommended): 7-12V
6- Input Voltage (limits): 6-20V
7- Digital I/O Pins: 20
8- PWM Channels: 7
9- Analog Input Channels: 12
10- DC Current per I/O Pin: 40 mA
11- DC Current for 3.3V Pin: 50 mA
12- Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by bootloader
13- SRAM: 2.5 KB (ATmega32u4)
14- EEPROM: 1 KB (ATmega32u4)
15- Clock Speed: 16 MHz