Our Hand Crank And Solar-Powered Black Flashlight conveniently gives you two charging methods for its built-in lithium battery, so that you’re never without light when you need it. It has a solar panel, which is the main charging source, and a handcrank for emergency use or when solar charging is not an option. The built-in 40 mAh lithium battery will last for approximately 8-10 hours of continuous use. The three LEDs are ultra-white and are remarkably bright and the casing is built of tough and durable ABS. The flashlight is great for camping, automotive, boating and emergencies. A nylon lanyard is included for ease of carry.