This 90 cm length LED Strip acts as a 3rd brake light on the rear windshield, even your vehicle has an upper 3rd brake light already, you still can install this light on your car easily. Lights up immediately without delay and it is an energy-saving and durable product. Improves Car Visibility even in Foggy and Rainy Weather. Has Indicator, Brake and Running Function. Makes your Car looks Stylish. LED lights less heat radiation, low power consumption, long service life. Easy To Installation: With Double-Sided tape, you can install the lights inside rear windshield, just make sure your window is clean and free from any smudges before installing.