Features:

- Arduino compatible (recognized as an Arduino Leonardo in IDE)

- Atmel ATMega32U4 Microprocessor

- Freescale MPR121 dedicated touch interface

- VLSI VS1053B audio processor

- Arduino Shield Compatible (check pins available)

- 32 KB of Flash Memory of which 4 KB is used for bootloader

- 5V operating voltage (automatic voltage selector for USB or battery operation)

- Built in LiPo battery charging with onboard boost circuit for 5V operation

- 16 MHz clock speed

- Can be powered and programmed over USB

- 20 digital I/O pins (3 used for Touch IC and 5 for MP3 IC – can be disabled)

- 7 PWM channels

- 12 analog input channels

- 12 Touch electrodes of which 8 can be configured as extra digital inputs or outputs with PWM capability

- 84mm x 62mm foot print with maximum height of 10mm (audio connector)

- Up to 32GB via micro SD card

- HID Capable