Police car siren, vehicle siren, electronic siren with MP3, Used for police car, cop car, fire fighting, ambulance EMS, ... voltage: 5V Remote control distance: 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, Wail ...