H3 H4 103 203 404 auto horn Power voltage: 6V, 12V, 24V Power currency: 4.5A Sound level: from 95db-110db(A); Frenquency: L: 410Hz, H: 510Hzauto horn1)Power voltage: 6V, 12V, 24V2)Power currency: 4.5A3)Sound level: from 95db-110db(A);4)Frenquency: L: 410Hz, H: 510Hz5) MOQ:500SETS 6)Delivery date: 15-20 days. According to the quantity and products type. 7)Payment: T/T