Socket: H3 H27 880 881 Usage:Daytime running lights fog lamps DRL This bulb is designed for fog lights or daytime running lights, not for headlights, please don't use it for headlights! Note: After installing LED bulbs, such as bulbs appear in the following situations. Don't worry, there is no problem with the bulb, it's just that your car needs to install an additional decoder: 1. One bulb does not light up or the bulb is on for a while, then it goes out or the bulb flashes. 2. The dashboard displays the lamp failure/error code. Features: 1.high quality 3030 LED 24SMD chip provides high brightness and low power consumption. 2.The bulb is equipped with a constant current regulator (IC) for more durability. Package: 2Pcs LED Bulbs