4U Energy saving lamp-JL-4U04: 1.Life span:8000hrs, 2.Light efficiency:>60 ... .Certificates:CE,ROHS 4.Warranty:12month Energy saving light-JL-4U041.Life span:8000hrs,2.Color temperature:6500K,3.Light ... of equivalent incandescent lamps. Since lighting accounted for approximately 9% of household electricity usage in households, widespread use of ... the light being generated. 4U energy saving light--JL-4U04