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1.【5 LEDs with Built-in Sensor】 Built-in magnetic sensor -Compatible with all types of vehicle such as car, truck, van, SUV, etc
2.【Safety】This bright warning light will alert the rear vehicles, bikes and pedestrians when you open the door.
3.【Easy Installation】The adhesives included in the package enables you to stick the warning light and the magnet on the car door easily, no wiring or additional tool is required.
4.【Waterproof】Made of high-quality material, durable and waterproof, the warning light will function properly even in rainy days. Each warning light can last for 1.5 years