Hi dear friend welcome to BOOST office store The car s horn by BOOST has a super loud alerting sound like a lion howling. This product features premium quality and will perform better than advertised. High-quality production has won recognition and praise from customers for 25 years. Our products are manufacured to meet or exceed stringent industry standards. Heat resistance:the horn can work at 85 degrees Celsius and the sound remains loud Cold resistance: the horn can work at 40 degrees Celsuys and sound reduction is within 5dB. Waterproof performance:Adopt advanced technology and automation equipment to ensure the sealing consistency and air tightness of each horn, and maximize the waterproof effect of the horn. Characteristics:Double tone waterproof design Product model name:168 Characteristics:Super high double volume perfect harmony Voltage:12V Operating Voltage:9-16V Working current:3.5A/PCS size:80MM weight:700G Operating temperature:-40 degrees -80 life:150.000 times Applicable models:General purpose Car configuration: low with / high with Product Size:16*10*14