This is a 3.5mm stereo Rubber coated nylon AUX flat cable audio connector that makes this the perfect solution for portable audio devices (iPod, iPhone, iPad, and MP3 players), even if the device is in a protective case. It can be used in conjunction with the car speakers which turns it into a handsfree device to handle your phone calls or music stored on your phone. The mic input clearly transfers your voice while driving. The unique slim connector design fits most iPod, iPhone, Smartphones, Tabs with 3.5mm stereo jacks without having to remove the protective casing. High grade molded connectors with strain relief ensures a solid high quality connection between the connected devices.