... .Power:14w,21w,28w,35w,54w 2.PF>98%,THD<10% 3.30000hrs, three years warranty ... 4.Complied with TUV t5 electronic ballast 54w electronic ballast Power: 14w,28w,35w,54w,2*14w,2*28w,2*35w,2 ... ballast Comply with 3C,TUV-CE standard t5 electronic ballast 54w