4 Pcs LED bulbs: 2 Pcs 41mm and 2 Pcs 36mm Pack of 2, each bulb use 3020 super bright SMD chips, build-in canbus driver to pass by error check for most of car Pure white, 6000k, full aluminum heat sink, well designed, long last life super bright, 400 lumen, Festoon Please make sure your car use festoon before order, it can use on many different position such as Dome light, Trunk Light, Map Light build-in canbus system, error free Easy to install Plug and play Low Power Consumption Up to 50,000 Hours Service Life Voltage: DC12V-24V Lumens: 400 Light Color:white Color: Black shell Material:aluminum size: 41*12mm and 36*12mm Package Contents: 4 * LED bulbs Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.