Power/Technology: Rechargeable Lithium Polymer battery. Input DC 5V/1000mA; Output DC 5V/2100mA; Capacity: 4000 mAh. Charge time differs by device. Must charge power bank prior to first use. Includes instruction manual and micro USB to USB-A power bank charging cable; phone charging cables not included. Aluminum device includes 4 LED indicator lights: all 4 lights are illuminated when device is fully charged. Indicator lights flash while device is charging, and blink when power bank is charging your device. Lights will turn off one by one as power is drained from device use. Individual phone attachments not included, only USB charging cable provided. Instructions included. FCC approved. UL Certified (UL File # MH60484). WARNING: Refer to the item manual for safety and warning instructions. This item can only ship via Ground. This item cannot ship internationally, INCLUDING Canada. This item cannot ship to Hawaii, Alaska, Puerto Rico or any other destination where the package must go into a plane.