Voltage:12 V, Frequency:420/500 Hz, Sound Level:105-118 dB , Dia: 95 mm Vehicle Compatibility: Applicable for passenger cars, SUVs and commercial vehicles Extremely functional and easy to install in your car interior without any hinderance With a set of 2 horns comprising of low tone and high tone, Bosch Symphony horn enhances the performance of the horn which help the drivers better determine the warning signal Keeping up with the latest trends, Bosch symphony horn comes with unique features in attractive pricing