SunJack Portable Solar Charger POWERFUL & SMART: Solar panels pump out up to 2 Amps of power per USB port to provide wall-outlet charging speeds, with a built-in smart IC chip to intelligently identify your device and maximize charging speed while protecting from overcharging. Automatic restore if shade occurs. RUGGED & PORTABLE: Weather resistant folding panels compact down to the size of an iPad and easily fit into any backpack. Shock-proof, dust-proof, drop-proof, tested and used by the US Military. MULTI-USE: Ideal for camping, backpacking, hiking, outdoor adventures and an essential in any emergency preparedness kit for survival. Never be caught without power. HASSLE FREE WARRANTY: Designed in California, backed by 12-month hassle free warranty from a local USA company.