HyperGear Dual USB Power Bank 8000 mAh Universal Portable Rapid Charger/External Battery, 2.1&2.5A Output, High Capacity, Smart Chip Technology for iOS & Android Smartphones, Tablets, wearables, etc MASSIVE CAPACITY: 8000 mAh of pure power. Charge 2 devices simultaneously from drained to full 4 times! If youre frequently away from an outlet, going on a flight or a road warrior, this portable powerhouse is just what you need to stay connected MAXIMUM SPEED: Two High-Output ports (2.5A & 2.1A) get your drained devices up & running quickly. And the Powerful 2A Input means you can recharge twice as fast, so you can spend less time charging & more time doing INTELLIQ TECHNOLOGY: Patent-pending Smart Chips identify & deliver the optimal amps for rapid charging your device so you can switch easily between Android & iOS gadgets. This cutting-edge circuitry also protects against short circuit & overcharge STYLISH & COMPACT: The Dual USB charger is perfect for students, travelers, business professionals, & commuters, it easily slips into a briefcase, handbag, backpack or carry-on, so you can always have reliable portable power at your fingertips 2-YR LIMITED WARRANTY: HyperGear's standard 1-Year Manufacturers Warranty is extended by an additional year for Amazon buyers (24-months of security!) For added peace of mind, we also offer a hassle-free 30-Day Money Back Guarantee through Amazon