Solar Charger Backpack Bag with Solar Panels to charge phones, tablets, cameras, laptops and small devices. Perfect for outdoor enthusiasts. Always a 5 W of solar power for charging ( 1 hour in the sun = 3 hours of talk time or 6 hours music playback ). Battery pack will store power to be used in the night. The detachable charging system can be removed and attached to other accessories. The indicator light shows when the solar panel is charging.