12V, 24V auto back horn 1,Back horn for cars/trucks/electric car 3,SPL:120dB 4,sound: ... DO...DO.., bee bee,lambada, 5,ROHS 1,12V ... back up horn2,Product Model: BB-4013,Operating Voltage: DC 12V or 24V4,Rated Output Power: 10W~25W 5,SPL:120dB6 ... /russian,French, Spanish 8,Color:Black/White9,Material:ABS DC 12V,24V back up horn BB-401,china