... years warranty for the products Longevity dome light,led dome light,xenon light. Rated Voltage220Vlight source:(on-polar fluorescent lamp ... indoor and outdoor worksite. Such as coal industry, petroleum and chemical industry, electric power, metallurgy, railway, iron and steel, ... and hot start .the factor of light source power>0.95 , high light efficiency, environmental,Energy-saving, no strobospic ...