Promate iHinge-LT 2-in-1 Audio & Charging Adaptor with Lightning Connector: Technical Specifications:Operating Voltage: DC 5V/2.4AAudio Output: 2 x 20mWFeatures:Charge & Music: Enjoy music or calls when on the move while charging your iPhone Pass-through charging: 2A pass-through charging powers up the iPhone/iPad at maximum speedImpressive sound quality: D