1. HF34 taxi top light box 2. 860*350*300mm 3. 12V DC power, , ... big magnets at bottom,steady enough.just put it onto car roof,no install.3. light: LED light inside,about 5w ... .6. Color: white,yellow,green,etc. Any color available.7. Car make: any type.We can offer you:1: different grade ... strong magnet :Our product display ark:Our factory picture: HF34 car top advertising