Advanced Sensor Technology The car door lights use intelligent sensor technology to automatically turn on as soon as the door is opened and turn off when the door is closed. This enhances safety by illuminating the doorway and helps preserve battery life by preventing unnecessary illumination. Energy Saving and Durable Made from recyclable materials, these car door lights are designed for energy efficiency and long life. They feature a USB charging port and a 500mAh battery, delivering up to 69 days of use on a single charge. Recharge anytime to maintain vivid projections and reduce your carbon footprint. Effortless Charging Loading is hassle thanks to a removable base that does not interfere with regular door use. The seamless design makes assembly quick and straightforward, so charging is convenient and straightforward. Easy Installation Install is simple with the included double sided tape. No drilling holes is required and you don't need to worry about the lights falling off. Use Scenarios Nighttime entry Open the door and the lights automatically activate to illuminate the doorway and floor area, improving visibility and safety when entering the vehicle in the dark. Parking in low light In dim parking environments the vivid projections provide clear illumination without draining the battery, thanks to the auto on off function and energy efficient design. Upgrading or replacing in existing vehicles The removable base and tape installation allow for a clean retrofit without altering the car structure. No complex setup and no damage to the door area.