Jackery: The Power Source for Mobility! Highest 3.4 A Single Port Output: Top speed charger with the 3.4A output for each port. (MOST CHARGER ONLY HAS 2.4A) Charge your iPhone 6s 7.5 times, Galaxy S7 7 times, iPad Mini 2.5 times Smart Fit Technology: Automatically identify the connected device and is able to charge your devices at its highest speed Premium Material: Grade A Li-ion polymer cell and top quality microchips with 4 lagers of smart safety protection circuit. Aluminum Shell (Not using plastic like others) last longer than ever What’s Included: 1* Jackery Titan Battery Pack, 1* Micro USB charging Cable, 1* User Guide & Warranty, 1* Thank You Card. (AC adaptor NOT Included, 2A adapter is recommended for recharge) 24-month product warranty and 7?24 hrs friendly customer service.