Half spiral energy saving lamp 1,watt:23w 2,power factor:0.55 3,lifetime:8000h 4,certificate: ... CE ROSH Half sprial energy saving lamp(23w)1.CE EMC,ROHS,FCC,E-TICK approvals2.Switching frequency ... ,hotel,office,commercial buildings,etc.Parameters: ModelWattVoltageHertzColor TemperatureLumenLifetimeBase TL-HS/23W 23 110/220V 50/60Hz 2700K-6400K 1100 8000H E14 ...