Features: 1 Safe driving in the wilderness: The elk whistle produces sound through the air to warn deer, elk, deer, antelopes and kangaroos approaching vehicles while driving, effectively avoiding collisions between animals and vehicles. 2 High-quality materials: The elk whistle is made of high-quality ABS materials, which makes it reliable and odorless, available for use in bad weather. 3 Easy installation: The elk whistle can be attached to the car with tape. Simply remove the protective paper and attach the whistle to the bumper. We recommend installing 2 whistles on your car. 4 Dual construction: The elk whistle has a convenient dual construction design. It is lightweight and invisible on your car. You can attach the whistle to cars, trucks, SUVs, motorcycles and other vehicles. It will automatically emit sound at speeds above 56 km/h and warn animals 400 meters away. 5 Satisfaction Guarantee: If you have any problems with the elk whistle,