Features: 1.The dual?tone design of 410Hz low frequency and 510Hz high frequency, and the loud horn of 105db, make the sound have a strong penetrating power, which can improve your riding or driving safety. 2.Adopting premium ABS material, resistant to high temperature, impact and corrosion, and with waterproof and dustproof cover, long lifespan. 3.Using high?quality tungsten contacts, it has good thermal conductivity and heat dissipation, and the in?line copper pin design has good electrical conductivity. 4.The high?content manganese steel vibrating plate makes the sound of the horn more clear and pleasant, and basically no noise. 5.With piano paint process, the base is more wear?resistant and corrosion?resistant, comes with connecting screws and brackets, simple to install on the vehicle. Specification: Item Type: Echo Horn_x000D_ Material: ABS_x000D_ Voltage: 12V_x000D_ Power: 100W_x000D_ Current: 8A_x000D_ Working Temperature: -40 - 50_x000D_ Frequency Response: 410-510Hz_x000D_ Sound Level: 105Db_x000D_ Caliber: Approx.70mm/2.8in_x000D_ Impedance: 3_x000D_ Be Applicable: 12V Universal_x000D_ How to Use:_x000D_ 1. Check the battery_x000D_ 2. The two yellow wires are connected to the woofer, the two green wires are connected to the tweeter, the red wire is connected to the positive pole of the 12V power cord, the black wire is connected to the negative pole or ground, and the blue wire is connected to the original car horn button control line._x000D_ 3. Fix the position with screws_x000D_ 4. Ready for use PackageList: 2 x Horn 1 x Control Module 4 x nstallation Accessories Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.