... BridgeluxLED Luminous Efficiency95 LM/WLED Flux(LM)14800 LMColor Temperature (K)Warm White2700 - 3900KPure White4000 - 6000KCold White6000 - 7500KColor Rendering ... when lighting the flux is liquid, when off it's solid, best cooler to ensure long lifespan > 50000 ... surface treated with anodization, corrosion-esistant, artistic appearance7.Cold light source, no heat radiation, harms-free to the eyes and ...