Dream Lighting 9 LEDs (5050 SMD) 1.8 Watt Festoon Bulb 42mm, 135 Lumens Cool White Mostly used to replace festoon halogen bulbs. Ideal for use as vehicle interior dome light. A plug-in-play replacement of the typical festoon halogen bulb. Vibration-proof design, able to withstand high levels of vibration. Equivalent to a 20W halogen festoon bulb. Innovational LED technology provides potential energy saving.