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Keep the Coast Auto LED flashlight in your car's cigarette lighter socket for on-demand lighting while you're on the road. Whenever the car engine is running, the flashlight's battery is charging, ensuring you have light when you need it most. Crystal Reflector Tube System utilizes highly reflective Italian crystal to intensify light output and provide a brighter beam than comparable lights. Lens produces a circular beam great for reading maps and locating items. Blue light illuminates while charging; complete charge takes approximately 5 hours; single charge lasts up to 2.5 hours. Includes one rechargeable 4.8-volt nickel-metal hydride battery.