Wondermart 3.7V 5600mAh Portable Backup Battery Charger 2 Ports USB Power Bank with LED for Smart Phones & other Digital Devices (5600mAh Blue) Capacity: 5600mAh 3.7V Input: DC5C = 1A Output: DC5V = 1A High security: Protection for overcharge, over discharge, overload, and short circuit Package including: 1 x 5600mAh Portable Power Bank & 1 x USB Cable Free Shipping from CA by USPS