Features: 1.This car door projector light is wireless, it's especially designed for auto modification fancier and it will not destroy the original car appearance, bringing more driving fun to drivers. 2.Smart light perception.The dazzle logo light and the signal light will display on the ground when you open the car door and it will turn off when you close the door. 3.Can be installed in both left or right door, courtesy door light makes your car artistic. 4.Apply to all vehicles, you can choose a different logo for your car. 5.Best gift for you and your friends. Specification: Shell material: ABS Shell color: Carbon Fiber Working voltage: 4.5V Output power: 5W Fitment: Universal Quantity: 1/2 pieces Lifespan: 8-10 million hours Powered by : 3*AAA batteries (batteries are not included) Package Includes: 1/2 pcs car door lights (without battery) Installation tutorial: 1. Wipe clean the doors and thresholds 2. Stick the infrared sensor sticker on car door threshold 3. Stick the big super glue on the product 4. Stick the led door light on the door above the car door threshold (As shown in the video, pay attention to the distance between the door light and the door sill)