This Arduino-compatible development board is a smaller version of the popular Leonardo. It measures just 23 x 20mm and is a great choice when you need a low-cost and compact Arduino project. The power and three of its analogue and digital pins go to large gold-plated tabs, making them suitable to connect alligator clips or for sewing onto clothing with conductive thread (sold separately). The board features a 32u4 ATMEL processor with a 16MHz clock, 10 x pins, consisting of  4 x  Power, 3 x analogue I/O pins, and 3 x Digital I/O pins.

Specifications:
• 16MHz Clock Speed
• 32kB Flash Memory (4kB used by bootloader)
• 1kB EEPROM Memory
• Power in 5VDC via Power In Pins
• Power Out 5VDC via Power Out Pins
• Digital Output x 3
• Analogue Output x 3