High quality Color: Black Voltage: 12V Pair set Heavy duty and long lasting Excellent sound quality Includes installation instructions Power tone and harmonics sound horns are suitable for all types of vehicles. Refer to the example of installation and wiring befor installing each horn. Please read the following instruction before installion and use: Denso is not liable for any issues that occur due to not following instructions or caution. Take a proper position of installation where the horns can be free from direct splash water, strong vibration or resonance with the body. Install the horns as the vent directs downward as shown in Fig. 1, 2, 3. This is to prevnt water from entering the product, which may lead to damage of the product. Caution: Please do not sound this product for 30 seconds or more in a row. This may cause malfunction of the product.