... 2years warranty Constant current driver CE ROSH 3w led light bulbs E27 The Advantage of LED bulb lamp 1, High brightness compare ... 10000 hours in theory.4, low power comsumption, just 1/10 power of incandescent lamp.5,solid state packaging, easy for ... any pollution9,low heating, and more safety than incandescent lamp.10,Wide woking voltage, its's could woking at voltage 85V ...