... halfspiral energy saving lampsPower(W):11W,13W,15W,20WDiameter:T3(9mm)Base:E27,B22,E14Input voltage:110-130V,60HZ,220- ... low temperature and low voltage condition2)excellent 80% energy saving ,green light protect enviroment3) No noise,no glimmer,no disturb ... 100W incandescent lamp output,CFL have 70-80% energy savingthan incandescent lamps9)Reasonbale price:Though energy saving lamp is expensive on ...