Product Description<br><br>ISD1820 Voice Recording Recorder Module With Mic Sound Audio Loudspeaker for arduino<br>Feature1:<br>the main chip: ISD1820<br>size: 38mm * 42.5mm<br>the working voltage: DC 3 ~ 5V<br>Loudspeaker: 8  0.5W.<br><br>Feature2:<br>1.