HIGH QUALITY:The With Mic PA Speaker System Emergency Sound Amplifier-7 tones is made from premium material that is durable and long lasting. PA SYSTEM: Car siren speaker are built in public-address system. You can talk to other people with this mic in your car.Suitable for Any 12V Vehicle: Car siren speaker can be installed in any vehicle with 12V DC Power. You can install it in Car, RV, Boat, Truck, Jeep ,etc. Ease Of Installation: The horn speaker is easy to install on your vehicle if you follow the instruction below. It takes minutes to connect wires. AUDIBLE:The Car Siren Horn With Mic PA Speaker System Emergency Sound Amplifier-7 tones designed to be very loud .And don’t make them face to face when you use. Customer Service: First of all, thank you for choosing the BANHAO horn.We will provide you with high-quality products and services to create a more enjoyable shopping experience on Amazon. If you encounter any problems when receiving or using our products, please feel free to contact us?we will serve until you are satisfied.