... price 3.Low lumen attenuation 4.CE&ROSH SMD led bulb, NEW led bulb light, led bulb lamp, led light bulb, led bulbs, led lamp bulb, high power led bulb ... copper heat conductor and external aluminum housing5. Light source: High power led 3W, 4W, 5W, 6W, 7W, 9W6. Luminous flux: 100-110lumens/watt7 ...