Aluminum; Mini key chain power bank emergency battery recharger; Power/Technology: Rechargeable Lithium Polymer Battery; Capacity: 1000 mAh; Input: DC 5V/1A; Output: 5V/1A; Features LED indicator light; Includes instructions and USB charging cable; FCC Approved; UL Listed (UL File # MH60484); WARNING: Refer to the item manual for safety and warning instructions; Product Size: 2.12 w x 1.41 h x 0.47 d; Shipping available to contiguous U.S. addresses and Canada via Ground only. Cannot ship via Air, Internationally or to Alaska, Hawaii, Puerto Rico and any other small U.S. island territory.