Jackery: The Power Source for Mobility! Portable Power Bank: 2.1A input can be 2 times faster to fully charge the 10200mAh portable charger ( please use a 2A or higher output charger) 2.4A output makes it charge other devices 2X faster than other chargers. The maximum input and output for the fastest and strongest charging experience Exclusive Smartfit Technology: With the Dual USB Port, up to 2.1A Max with per port, it Charge 2 times faster and smarter than others, automatically detects and delivers the optimal charging current for any connected device- ensuring the fastest and most efficient charge Unique LED Design: Smooth, aluminum shell allows you to power up in style, while 3 status LEDs keep you informed of remaining capacity. Built-in flashlight for dark or low-light environments. Secured battery safety with 4 layers of smart safety protection circuit What’s Included: 1* Jackery Fit External Battery, 1* premium Micro USB cable, 1* User Manual, 1* Thank You Card, Extended 24-Month Warranty, 30-Days Money Back Policy, 24 Hrs Friendly Customer Service.