Color: RedVoltage:DC 12VBulb Size:A Length:A 41.5mm, Width:12mmABuilt-in Circuit for 12V DC Power InputEach bulb contains A 2 PCS Ultra White 5050A SMD LEDEach bulb contains Heat Sink to prevent OverheatBuilt-in CAN-bus controller, no bulb out error, no flickeringCross reference A parts:A 211-2, 212-2, 214-2, 560, 569, 578The bulbs have the built in Can-bus load resistors and are made for A European car, such as A Mercedes-Benz,A BMW,A Porsche and A Audi etc..Festoon A 31mm-35mm:A 3021,A 3022,A 3175,A 6428,A 6430,A 6461,A DE3021,A DE3022,A DE3175Festoon A 36mm-39mm:A 3423,A 3425,A 6411,A 6418,A 6423,A 6461,A DE3425Festoon A 40mm-44mm:211,A 211-2,A 212,A 212-2,A 214-2,A 569,A 578,A 6413,A 6429,A 12844,A DE4410Note:1.Easy installation, A just plug & play. All you need to remove the lamp covers with a small flat screwdriver and direct replace the stock lamps with LED lamps.A2.LED lamp has + and - terminals, A if the LED does not light up, just simply A flip it 180A A degrees to reverse the polarity of the LED bulbs.Package Includes: 4 x Ultra Red 4-SMD Interior Lights Bulbs 42MM FestoonOnly the above package content, other products are not included.Note: Light shooting 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.