Bulb Demo Case 1, Made by aluminum, fireproofing board, pearly foam 2, Voltage:110V or 220V 3, Customized designs ... power meter, 1 voltage meter, 2 dimmer switches(1 for 220V, 1 for 12V), 3 GU10 base, 4 MR16 base, 2 G24 ... power and voltage of tested lamps4, Packing: 1pc/carton5, Good quality and timely shipment6, Logo printing is available Trolley Bulb Demo Case with trolley and ...