Solar Power Bank, Solar Power Bank Charger 10000mah Waterproof Shock-Resistant, ToullGo&reg; Solar Power Bank Battery Charger for Cell Phone iPhone 5s 6 6s Plus Samsung galaxy S5 S6 S7 (Green) High Capacity Battery and Solar Support: the 10,000mAh battery can be charged by an external source through USB, charging from the unit's battery can be supplemented with the built-in solar panel during the day, giving you even more power on your adventures. Build-in Lithium Polymer battery cells: anti-explosion, lightweight, compact and reliable. Long lifespan with more than 500 recharging times. Solid Build and Superior Portability: Waterproof, Dust-proof and Shock-Resistant -- Solar Power Bank is the perfect companion for the great outdoors. a hard-plastic case ensures that the product will be protected from minor drops or spills, meaning it won't fail you on your typical day to day outings. Easily hang it on your backpack with the included Hooks, hands-free on the go. Perfect for hiking, climbing and other outdoor activity. LED Flashlight: The LED flashlight works perfectly in darkness, especially for emergency. Just press the button twice, the LED will light up for flashlight mode. press again, the LED will flashing for sos emergency.. 4 LED status of charge indicators indicate the charging and discharging process. Friendly note: The efficiency of energy transformation from solar to electric energy is really low even in a perfect laboratory condition, the transformation efficiency just 30%. We suggest you recharge it via wall charger at the beginning to make the power battery fully activated. Super Customer Service--This product is sold exclusively by ToullGo. Please buy from authorized ToullGo official seller so as to enjoy genuine ToullGo products and superb customer service. SO if you meet any question, don't worry, please feel free to contact us instead of leave a negative product review. We will always be responsible for your item. Thanks for your kindness.