Main Parts：
Power Jack x 2
IC ISD1820 x 1
TACT Switch x 2
Microphone x 1
Audio Jack x 1
LED x 1
3-pin Stackable Header x 1
2x4-pin Stackable Header x 1
function：REC (record) and PLAY(play)
Output：SP+, SP- ( for 8Ω 0.5W Speaker)
3.5mm audio jack (for external speaker)
Brick Unit：6 x 5

Note：
(1) Use jumper to select record length (8s or 16s)
(2) Press and hold the REC button to start recording