Police car siren, vehicle siren, electronic siren with MP3, Used for police car, cop car, fire fighting, ambulance EMS, Wrecker, project car, sprinkler, patrol car, emergency vehicle ect. ... 10M Insert U disk, Play MP3 20 kinds of siren sound can be set Two-way light control switch Steering ... Wheel with siren speaker function Tones: Horn, Yelp, HILO, HI-LO, ...