【High Sound Pressure and Clear Sound Quality】 The ALPHA II boasts a sound pressure level of 110dB, ensuring that sound reaches the surroundings effectively. With a frequency of 400Hz, it achieves a clear and powerful tone. 【Easy Installation】 Installation is easy by following the included instruction manual. No special tools are required, making it simple for anyone to install. 【Durability and Reliability】 MITSUBA products are manufactured under strict quality control and are durable enough to withstand long-term use. - Brand: MITSUBA - Model Name: ALPHA II - Voltage: DC12V - Sound Pressure Level: 110dB - Frequency: 400Hz - Tone Type: Traditional Sound Horn Thank you for viewing. Although it is an unused item, there are some scratches and dirt on the box from storage. The horn itself is clean. Everything in the photos is included.