Komingo Sold Multifunction Car Dome Lamp Work As USB Car Charger & Projector Lights with Superman Projection Films 1.12-24V dynamic input voltage regulation system.Short-circuit protection function When the output voltage or current is excessive to project your devices. 2. Superspeed USB charging output, efficient charging for digital products. 3.Can be used as projector lights to project a variety of clear and cool patterns to the top of the car.What&apos;s more,you can also change the projection patterns by changing the Films. 4.This product is no pollution, no noise, no electronic interference, is a new green light used in car,and it has passed RDW E4 Certification. 5.Germany advanced constant current control technology, making light uniformity and lasting constant!