MACHSWON Deer Whistles for Car Invisible Automotive Interior Safety Products Animal Warning Devices Horns Sensor Alerts Gadgets for Car SUV Truck Vehicles Black 4pcs

【Driving safety accessory】The car deer warning whistle device is an essential car accessory for drivers who drive in the wild, the air passing through the whistle device will produce sound, which can alert deer approaching the vehicle and scare them away, thus effectively avoiding the collision between deer and vehicles
【Working Principle】When your car is traveling at 35 miles per hour and above, the whistle deer warning device can start working after the air passes.
【Easy to install】 the animal alert horn devices are equipped with adhesive tapes, you can just remove the paper of tape and stick the device to your car flat places easily, and make sure the bigger ends faces the front, and the deer whistle is level with the horizon, which will take you a few seconds to install without other tools
【Quality material】dual construction deer warning whistle devices are made of ABS plastic material, which can withstand the bad weather, and it can work well even in very hot and cold weather conditions, safe and no odd smell, and the whistles are equipped with tapes which are waterproof and easy to stick, can be stuck more stably and will not break your car paint
【INVISIBLE & DOUBLE WHISTLES DESIGN】Each single deer alert device is 1.97*1.57*0.78 inches in size, and each has 2 whistles, and they can be attached to all types of bumper or grill, which is hardly to notice and wont affect the appearance of your car.

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