energy saving lamp short start up for stable radiation without flicker energy saving lampsoptional base:E14, E27,B22OEM for product or plastic base is acceptedWatts(W)Voltage(V)Tube Dia(MM)Color Temp.(K)Lumen(Lm)RaLamp Life (H)9110/22092700-6500450828000 11110/22092700-6500660828000 13110/22092700-6500780828000 4U energy saving lamp