... -3500k RGBLamp Efficiency : >90%Light Uniformity : >85%Color Rendering Index : >75%Beam Angle : 160 degreeMaterial : Aluminum + PCLifetime ; 50,000 hoursCertifications : CE ... lamp2, Long lifespan : 25 times higher than the normal lighting products.3, Enviromental protection : No UV,no RF,no such harmful elements.4, Aluminum material ...