Instructions:12V Auto Truck Vehicle Megaphone Loud Air Horn Siren with MIC Speaker 5 SoundsInstructions:Brand new and high quality.5 different Sound Siren Speaker + Microphone Super Loud up to 300db.Universal fitting for 12 Volt DC Vehicles，such as car，boat，truck，tractor，van，SUV etc.Powerful air powered Horn for any application.With includes cables， mounting brackets and sound selector.Specifications:Material: Plastic+metalRated Voltage: 12VCurrent: ◎2APower: 30WSound intensity:300dBColor: Black(as picture show)Number of different noises: 5Package includes:1 x Loud Horn Siren with MIC