... , vibration sensor, shadow sensor or rocking switch.4. Main component: plastic house, speaker, PCB, IC, batteries, switch, wires5. House material: ABS material ... , sounds, voices, messages, phrasesSound formatMP3, WAVSound volume70-90dbSpeaker size40MM, 27MM plastic speaker available to chooseBattery sizeAG10 or AG13Battery lifeUse more than 500 ...