Luisvanita Eco Solar Charger Backpack Bag Black 6w External Frame Hiking Daypack-Black PANELS - 1 rugged monocrystalline solar panel with 6W total peak output at 7V. The panel is waterproof, lightweight, and coated in self-healing urethane to withstand abuse and resist scratches. USB Cable - the USB port with the included 4 models USB adapters and a USB cable. CHARGING - 4.5 hours in the sun charges most smartphones completely, 1 hour in the sun provides 2 hours of smartphone use. 10 hours in the sun charges most 7" tablets completely, 1 hour in the sun provides 1 hour of tablet use. COMPATIBILITY - Designed to power and charge different types of devices that charge from USB, including various handheld devices and smartphones, and DSLR camera batteries. Apple iPhone, iPod, iPad, Samsung, Sony, Nikon, Canon, Blackberry, and other Android devices. DESIGN - Backpack is made of lightweight, water, and UV resistant fabric manufactured from recycled PET (soda bottles) and has 970 cubic inches of storage, a padded laptop sleeve, and plenty of other pockets.