LED warning light with solar charging: With solar panels, energy-saving and environmentally friendly car lights. Test E4. Flexible USB charging app. You can pre-charge our solar-charged warning light with a USB charger. It can also be charged in the car. 3 different light modules, one switch controls 3 different modes and on/off. Modes include several short flashes, several continuous flashes, rotation, and even burning light. Different modes to meet the needs of different scenarios. 10–15 hours of use after 3–4 hours of charging. Magnetic mounting: The warning light is equipped with high-performance magnets to secure the roof of your car, truck, van, or ambulance in seconds. Waterproof and durable. No paint will scratch the paint! Many uses: This LED warning light is designed for all vehicles! Emergency lights can be used for personal or professional jobs, including snowplows, delivery trucks, forklifts, ATVs, slow-moving vehicles, construction vehicles, and more.