... case Output socket, input socket, LED,button Hot Selling portable power bank 6600mAh Capacity Product Composition Capacity:6600mAh Input:DC 5V-1000mAh ... socket, LED, button Features Inside micro computer control Low static power consumption Dual USB - large current output and high convert ... discharge, over-current, short-circuit protection etc. Hot Selling portable power bank 6600mAh Capacity