Vehicle-mounted wireless LED warning light, battery flashing, powerful door safety warning light, rear-end collision prevention, automatic opening/closing side LED warning light Specification Color: Red, Yellow, Green, Blue, White, Rainbow Size: 2.8*0.8cm Material: ABS Installation tips: 1. Clean the edge surface of the car door to be pasted. 2. Determine the paste location. 3. Tear the bottom film and paste it to the correct position. 4. Press for about 5 seconds, and then finish.