... guarantees long life span of the lamp beads;3.Environment friendly, no flashing, no UV or infrared radiation, low heat radiation, mercury ... to standard High - Pressure Sodium / Halogen Lamps / metal Halide lamp and others lamp,5.Long life span of over 50,000 hours by ... energy-saving lights.Application:Widely used in Square,Park,Garden,and also can lighting up the building,roads.etc