Compatible With Apple® 8-Pin, Micro USB And Type-C Devices. Simply Plug The Cable Into A Powered USB Port And Then Into Your Device Or Smartphone. Charge Multiple Devices At Once When Using An Ample Power Source. Use Type-C Power Sources To Charge Existing Devices. 40 ⅛" When Fully Extended. Apple is a registered trademark of Apple Inc., registered in the U.S. and other countries.