This stereo jack cable by Delock is compatible with its 4-pin connector to devices such as smartphone or tablet with CTIA jack interface and serves as an extension of the 3.5 mm jack connection. Thus, the cable can be used, for example, when connecting headphones to a mobile device. The microphone function of the headset is still supported. Due to its small cable diameter, it is very flexible and most suitable for usage on the go.