12V, 24V auto back horn 1,Back horn for cars/trucks/electric car ... ,sound:DO...DO.., bee bee,lambada, 5,ROHS 1,12V/24V back up horn2,Product Model: BB-4013,Operating Voltage: DC ... ,French, Spanish 8,Color:Black/White9,Material:ABS DC 12V,24V back up horn BB-401,china