standard E27 socket,super high efficency,energy saving,long use life ·90~240VAC input, standard E27 socket. ·The total power is 20W, 48 pcs of 0.5W LED, luminance is 960LM. ·Super high efficency, energy saving. ·Perfect replace for normal energy saving and incandescent bulbs. ·Long working life, up to 50,000 hours