SolaDyne Solar Panel Table Top Camping Lantern w/ USB Port Charge using free solar energy and dynamo hand crank power Includes a 12V DC charger to charge in your vehicle 4-AA size batteries (included) can also be used to provide up to 100 additional hours of use 16 LED Lantern operates on high (12 LEDs), medium or low (16LEDs) Full charge provides 16 hours of use on Medium, 40 hours on Reading light, and 48 hours on the Nightlight setting