Solar LED warning light : With solar panel, saves energy, environmentally friendly car lamp. E4 tested. USB charging/cigarette lighter charging: 2 charging methods. Flexible application. You can pre-charge our solar warning flasher with USB charger. And also equipped with a cigarette lighter, you can also charge it in the car. 3 different light module, one switch to control 3 different modes and turn on/off. Modes include multiple short-duration flashes, multiple consecutive flashes, rotating, and an even burn. Meet different modes needed in different scenarios. And you can use it for 10-15 hours on a 3-4 hour charge. Magnetic Base: The warning light is equipped with high-performance magnets that secure the roof of your car, truck, van or ambulance in seconds. Waterproof and durable. No paint to scratch the paint Rich application: This LED warning light is specially designed for use in all vehicles Emergency lighting lights can be used for personal or professional work including snow plows, mail carts, forklifts, ATVs, slow moving vehicles, construction vehicles and more.