... 20w, 25w , 127V 60HZ ,8000H , Pure tri-phosphor lamp tube ,90% actual power CE/RoHs Energy saving lamp ... 3u Specification:1.voltage and frequency :100-130v(127v) or 220-240v ,50/60 Hz ,2.Power available :15w ,20w ... color powder T4 fluorescent tube ,4.lamp base:PBT 5.lamp holder available:E14,E26,E27,B22 ... luminous efficiency : 1 piece of energy saving lamp equal to 5 pieces of incandescent bulbs ,for ...