... buttons, light sensor, vibration sensor, shadow sensor or rocking switch.4. Main component: plastic house, speaker, PCB, IC, ... batteries, switch, wires5. House material: ABS material, environmental6. House size: ... or AG13Battery lifeUse more than 500 timeselectric currentLess than 0.5Wvoltage4.5VPacking detailsNet weight: 20g/PCGross weight: 23g ...