1,Energy Saving Lamp 2,Best quality. up to 10000 hous lifespan. 3, ... longer life Flicker free starting operation Ideal replacement of incandescent lamp T2,T3, T4 ,T5 tube are available Specifications:Optional ... 50/60Hz Average lifetime: 6000hrs/8000 hrs/10000hrs available Optional base: E27/B22/E14 Optional Color Temperature: 2,700K-6,500K ... UL, CUL, FCC, CE, SAA 38W Half Spiral energy saving lamp