Voltaic Systems Fuse 6W Portable Solar Charger with Battery Pack (4,000mAh) - Silver PANELS - 1 rugged monocrystalline solar panel with 6.15W total peak output at 6V. The panel is waterproof, lightweight, and coated in self-healing urethane to withstand abuse and resist scratches. BATTERY - The system includes a removable and portable V15 backup battery pack; a 4,000mAh, 15Wh universal battery to store power and charge your devices. The battery can also be charged from any standard USB port with the included micro USB adapter and USB cable. CHARGING - 3 hours in direct sunlight fully charges a typical smartphone, 8 hours in direct sunlight charges most 7" tablets completely, and 11 hours in direct sunlight charges most 10" tablets completely. COMPATIBILITY - Voltaic's portable solar tablet charger is designed to power and charge thousands of devices that charge from USB, including various handheld devices, USB cameras, and smartphones like the Apple iPhone, iPod, iPad, Samsung Galaxy, Sony, Nikon, Canon, Blackberry, and other Android devices. DESIGN - Our solar charger is made of lightweight, water, and UV resistant fabric manufactured from recycled PET (soda bottles) and comes with a universal attachment system with four male/female clip sets.