uxcell a16030100ux0107 Motorcycle Car 4 Tone Sounds Loud Security Warning Siren Horn DC 12V Power: 30W; product name: motorcycle siren horn Material: plastic, metal, Electronic parts; package content: 1 pcs x motorcycle siren horn Color: Black; dimension: 10 x 10cm/4" x 4"(lmax.D) Voltage: DC 12V; mount hole dia.: 5mm/0.2" Type: 4 tone