... .15w led ceiling light 2.>50,000hours lifespan 3.>82% efficiency. 4.>95% power factor. 5.No UV & IR light radiation high ... 100LM /LEDLife time: >50,000 hoursNo UV, no IR light radiation, with perfect heat dissipationAdvantage1. LED downlight have higher efficiency ... soft luminescence, stabilization, continuity, and approximate natural light, which is a perfect light source.9. Milky glass cover or PC ...