1.220-240v ,50-60Hz, 2.85% acctural power ,tri-color powder tube,high luminous efficiency 3.80% energy saving 4.Longer lif Energy saving lamp half spiral Specification:1.voltage and frequency :220-240v ,50/60 Hz ,2.Power available :7w ,9w ,11w ,13w ,15w,18W,3.85% actual power ,100% tri-color powder fluorescent tube ,4.lamp base:PBT 5.lamp holder available:E14,E27,B22 6.color temprature:2700k , ...