LED Demo Case 1, Function:multifunctional 2, Voltage:110V or 220V 3, Customized ... E27 base, 4 Mr16, 3 E14, 3 GU10, 2 dimmer2, Dimmer to control the connected bases,3, Display and Compare various lamps, Test ... the power of tested lamps4, Packing: 1pc/carton5, Good quality and timely shipment6, Logo printing is available led demo case