Voltaic Systems Milliamp Portable Solar Charger with Battery Pack (4,000mAh) - Orange PANELS - 1 rugged monocrystalline solar panels with 2.2W total peak output at 6V. The panel is waterproof, lightweight, and coated in self-healing urethane to withstand abuse. 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 - 7 hours in direct sunlight charges most smartphones completely, 2 hours in direct sunlight provides 3 hours of smartphone use, 1.5x smartphone charges from the included V15 battery. COMPATIBILITY - Designed to power and charge thousands 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 - Our solar charger is designed in New York City and made of lightweight, water, and UV resistant fabric manufactured from recycled PET (soda bottles).