high efficency, low electricity consumption long lifespan, high luminance energy saving and enviromental 9W E27 LED house light color temperature : WW:2800-3200K CW/PW:6000-7000K material:alumium: alloy + pc Independent current source design EPISTAR LED chip quality the LED BULB and All the material are of very good qualityProduct advantagea) High reliable constant current driving guarantees long ...