TRRS 3.5mm (1/8 inch) AUX Male to Female Stereo Audio AUX Headphone Extension Cable. The TRRS (tip-ring-ring-sleeve) plug provides 4 conductors allowing you to carry both stereo audio and voice over a single cable(Note:Additional cable used will also need to be TRRS for voice over function). Connector: 3.5 mm Male to 3.5 mm Female. Slim connector design allows you to easily fit into a 3.5mm headphone jack while in a protective case. Suitable for General Audio Applications. Nickel-plated connectors. Fully molded connectors provide strain relief. Foil shielded to prevent unwanted EMI/RFI interference. Extend the distance from your iPod, MP3 player to any audio output / speaker devices. For audio music output ONLY, audio input not available. Connects PC sound card, portable CD player, MP3 player, iPhone, iPod, HTC, LG, Samsung, Nokia, Motorola or any mini-stereo audio device with 3.5mm jacks to multimedia speakers.e CD player, MP3 player, iPhone, iPod, HTC, LG, Samsung, Nokia, Motorola or any mini-stereo audio device with 3.5mm jacks to multimedia speakers. Standards: UL, CSA, RoHS, ISO 9001:2000 manufacturer