About this item: Solar LED Warning Light: With a solar panel, this car light is energy-efficient and environmentally friendly. USB/Cable Car Charger: Two charging methods. Flexible use. You can pre-charge our solar-powered flashing warning light with a USB charger. It also comes with a cigarette lighter adapter for charging in your car. It has three different light modules and a switch to control three different modes and an on/off function. The modes include multiple short flashes, multiple consecutive flashes, rotation, and even steady light. The different modes are suitable for different situations. You can use it for 10 to 15 hours with a 3 to 4 hour charge. MAGNETIC BASE: The warning light is equipped with high-performance magnets that attach it to the roof of your car, truck, van, or ambulance in seconds. Waterproof and durable. No paint will scratch your vehicle! Versatile Applications: This LED light is specially designed for all types of vehicles! Emergency lighting is suitable for personal and professional use, including on snowplows, postal trucks, forklifts, off-road vehicles, low-speed vehicles, construction equipment, etc.