... yourself at your side Material: PCB board, speaker, battery, press button, and recording IC Voice or music pre-recorded time: 3 to ... message sticker. etc4.Can be activated by press button, slip tap, shake, and light/motion sensor5.Pre-recording voice file as your favorite ... yourself at your side Material: PCB board, speaker, battery, press button, and recording IC Voice or music pre-recorded time: 3 to ...