1. Voice recorded by pressing button ’’REC’’; Play by pushing button"PLAY"; 2. Hold the module with the holes at side and turn the top the left until the stopper is released (lock is on the side) 3. Press top down until you hear the beep and start recording 4. After you finished recording release the stopper and you will hear 2 beeps; 5. Press the switch at the bottom to play and push the stopper to hear your recording; 6. Component: Plastic shell, PCB, recording chip, button cell; 7. Voltage: 4.5v; Current: 60MA; 8. CELL: Ag13*3, changeable. Customized message will be quitely welcomed! Mini-order: 4000-6000pcs