Pure Aluminum House + High Transparent/ Forsted PC Cover Excellent thermal management and lumen maintenance. Used surface mount LED as light sources. 3020/ 3014 SMD LEDs available Excellent luminance efficiency and stability Wide voltage supported. Range from 100~ 240v AC. Base optional: E27 / E26 / E14 Instant start up, no flicker. No mercury or lead. No ultraviolet and infrared radiation, safe for human being. Build in constant current power supply Warm white/ Daylight white / Cool White / RGB color optional Long life-span, up to 50000 hours or more Easy to install, can replace incandescent bulb directly.