... : 15/18/20/25w Rated life:6000/8000/12000 hours U series energy saving lamp:Power: 15W, 18W, 20W, 25WColor temperature ... (K): 2700K, 4000K, 6500KBase: E27, B22Voltage: 110-130V,220-240VAverage life: ... % energy cost Packing:1pc/box, blisterOuter packing: Paper cartons, pallets U Series Energy Saving Lamp