Built-in 8500mAh high capacity rechargeable Li-Ion battery.  Compatible with iPhone, iPad, iPod,USB Digital Devices and most cell phones.. Long lifespan, more than 600 times the charging and discharging protection With advanced intelligent protection chip, the overcharge protection, discharge protection, overload protection, short circuit protection. Safe and reliable, perfect for using on travelling and outdoor activities. Specifications: Input: 5V/1.0A(Max) Output 1: 5V/ 1A (Max) Output 2: 5V/ 2.1A (Max) Capacity:5000mAh Package Includes: 1 x Power bank 1 x USB Cable