1.Voltage available: 110V/220V 2.Frequency: 50Hz/60Hz 3.The Average life is during 10000hrs (6years guarantee) 4.Magnetic core is 90mm, enameled wire抯 diameter is 0.27. 5.The patch of ballast is used by imported sheet of silicon steel, the highest temperature is not over 60℃when it runs. 6.It can work at 180V 7.Packing: one pc with an inner box or a color box, 20pcs/ctn