Compact, tough and lightweight unit charges quickly and retains power for extended periods. Collect and store, then charge on demand with PowerSync. It’s the powerful, innovative technology behind our SolarBook, SolarWrap and Battery Bar systems. Set them out on a sunny day and in no time you have the power to charge your smart phone, camera, practically any device with a USB input. No sun, no problem. With a high capacity Li Ion rechargeable battery on-board, pre-charge them from home with a Micro USB Input and you’re ready to go – whatever the conditions. Features: Easy to read on board battery level indicator 1x USB Outputs for charging your devices 1x Micro USB for charging from a wall outlet Weight (oz.): 5.4 Size (in.): 9.125 x 1.4 Charge From Wall: 4 Hours USB Outlets: 1 Power Output: 5v, 1a Battery Type: Li Ion