E27 LED Lamp 1.LED lamp power 5W,540Lm 2.CE & RoHS approval 3.Warrenty 2 ... , electronic ballast of energy saving lamps produces electromagnetic interference!), more lamp beads, still can be used even if some beads damaged ... is only 1/10 of incandescent lamp and 1/4 of energy saving lamp! 5. Convenient: General standard lamp holder, without ballast, starter. Certifications