Features High Efficiency Built with Sun Power polysilicon solar panels, its maximum solar conversion efficiency is up to 22%. Great for converting sunlight into electricity & recharging itself under sunshine. Portable Battery Charger Internal 4200m Ah lithium polymer battery can charge USB (Universal Serial Bus) powered devices with maximum output of DC5V / 1A. Recharged via the solar panel or using the included micro USB (Universal Serial Bus) cable. With 4 red LED indicator lights to indicate battery levels. Flexible LED Flashlight The high power 1W 4 LED flashlight works perfectly in darkness. Rotatable design is great for camping, reading, biking, emergency, etc. Just press the power button twice, the white LED flashlight will light up. Superior Portable Lightweight, pocket-sized, easy to carry. The collapsible metal holder lets you adjust it to different angles flexibly in order to absorb sunlight efficiently. Easily hang it on your backpack. Perfect for hiking, camping & other outdoor activities. Safe & Reliable Built-in over charging, over discharging, over current, over voltage, over heating & short circuit protection keep you & your devices safe.