... -phosphor Fluorescent Powder CFL. Safe,ESL,1W hour Semi-spiral energy-saving bulb Compact fluorescent lamp Pass CE,EMC,UL,FCC,ROHS,GS ... /220-140V 2.Performance Frequency:50-60HZ 3.Base:E14/E27/E26/B22 4.Performance Life:>10,000hours, 10,000hours long ... 9.Including more than 30PC parts,very Safe Semi-spiral energy-saving bulb Compact fluorescent lamp