Goal Zero Flip 10 Portable Phone Charger, 2600mAh/10Wh External Battery Bank, Charcoal Grey [Precharged Backup Battery for Your Phone] Small and portable 2,600mAh (9.4Wh, 3.6V) phone charger with 1A USB output and input designed to give your phone a quick recharge. [No Cable Needed] Built-in flip-out USB plug for tangle-free charging from any USB port in about 3 hours. Charge the Flip and recharge your phone at the same time with unique pass-through power. [Pick Your Flip] Solid aluminum finish in multiple colors means you can find a Flip that fits your style. [Battery Level] Easy to read LED battery indicator. Press and hold to view battery level [Whats Included] Flip 10 Power Bank, Micro USB Cord, one year warranty, US customer support, user guide