Top quality piece of equipment, the build quality is without fault, soft waterproof rubber grip on both the battery pack and solar panel with soft poaches for all accessories and adaptors with a perfectly formed carry case for both panel and battery. The solar panel has a green LED to indicate charging power and if you listen carefully you will hear a high pitch sound which at it’s highest indicates that it’s at optimal trajectory to the sun even in dull conditions. This unit will charge both Ipad and Iphone at the same time and same speed as plugging then into the mains power. Fantastic piece of equipment to have handy if you’re going out for a couple of days or a couple of months, with an attachment for every rechargeable device and plug attachment for every county and the solar panel for where there is no power at all, what more could you need.