Alarm Horn, Car Alarm, Alarm Siren 1.Built-in audio amplifier 2.Support 10W audio output ... 3.color:black,red Alarm Horn, Car Alarm, Alarm Siren FeaturesAudio format : wav , 16bit, mono ,sampling rate supports 6KHz,8KHz ... Waytronic Let sound change life-------------------- Alarm Horn, Car Alarm, Alarm Siren