This stereo jack cable by Delock is due to is 4 pin connector, compatible to iPhone, iPad and iPod. It enables the extension of your 3.5 mm stereo jack interface and can be used for the connection of a headset to a mobile device. Furthermore it supports the microphone function of an iPhone headset. Due to the additional gold ring at the end of the connector, this audio cable can easily be connected to devices, which are protected by a cover.