1)Work voltage: DC12V or DC 24V

2)Optional within 80W,100W,150W,200W,300W speaker in the middle of lightbar

3)This lightbar adopt high quality halogen bulb. revolving lightbar is very brightness,warning

    light(caution light)is popular !

4)this warning light (warning sign)  is very bright and visible both at night and during the day

   and is very easy to install and comes with Mounting hardware for roof mount. There is no

    need  to drill unnecessary holes into your vehicle to install this bar