Intocircuit Travi 8400mAh Portable Dual-Port 5V 2A/1A External Battery Pack Power Bank Backup Charger with Built-In Flashlight for Smart phones, PSP, iphones, ipads, samsung, htc, nokia, sony smartphones and More-Piano black High 8400mAh capacity; 4 full charges to iPhone 4S / 4G / 3GS, 2-3 full charges for Samsung Galaxy S 4,3 or one charge for your tablet 4-LED power meter shows remaining capacity. Flashlight included for low-light environments. Press power button 3 seconds to turn on&off the light . Multiple safety protection mechanisms: protection against overcharge, overload, overvoltage, over-current, and short circuit High quality Samsung Grade A Lithium-ion cells ensure reliability with 500+ recharge cycles over the life of the battery Output: 5V / (2A + 1A) dual USB ports for charging two devices simultaneously and rapidly . Input: 5V / 1A(1.2A Max). &gt;1.2A adapter(not included ) for fastest charging time( 7~8 hours) Package includes: Intocircuit Travi 8400mAh External Battery, Micro USB wire, 4 phone connectors compatible with most of the phones, instruction manual, travel pouch