... Excellent color renderingT3 halfspiral energy saving lampsPower(W):11W,13W,15W,20W,25w,30wDiameter:T3(9mm)Base: ... and low voltage condition2)excellent 80% energy saving ,green light protect enviroment3) No noise,no ... savingthan incandescent lamps9)Reasonbale price:Though energy saving lamp is expensive on the first purchase,you save ... canreplace a 75 watt incandescent lamp. energy saving lamp