- Easy to install, beautiful appearance, very fashionable, low cost, is the first choice for decorative car.
- The length of the product is only the length of the whistle, not the length of the fixed frame
- Widely used for all vehicle models.
- Under the premise of suitable installation size, better to choose a larger size.
- For small output volume car, better to choose a large size, for large output volume car, better to choose a little bit smaller, because the principle of whistle sound is to rely on air flow, large displacement, the greater the whistle, the more likely to make a sound.
