Type of light source: led lightsVoltage: 4.5 VShade Material: PlasticDimensions: 8.9 * 11.7 mmAverage life: 10000000 hTransformers: electronic transformerBase type: E 40 lamp shapePower: 0.1 WWeight: 0.22 kgPacking: Color BoxPower: The power cord or USB data cable or 3 AA batteriesNote: Color random， unworthy battery， data cable unworthy， unworthy of USB power cable