2011 High Pressure Sodium Lamp 1,Long life span:10000h; 2,High luminous efficacy; 3,Excellent maintenance. 2011 new metal halide Feature:1,High efficiency, ... long life;2,Excellent color Rendering;3,Compact structure, make the lamps and lanterns of miniaturization.Part ... Life time:40,000-50,000 hours 6) Full range of colors: cool white(6000-6500K), warm white(3000-3500K), ...