BOOST Car Horn 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 tightnes