The Velleman Arduino Shield - Audio interface for Arduino™. Record your voice via a built-in microphone or a line input. 60 second recording time, start playback, record,… via on-board buttons or via Arduino™ UNO. Playback via a speaker or a line output. Downloadable sample sketch and library. Stackable design: the shield can be stacked with other shields. Requires 1 Arduino™ UNO (not included).