Mediabridge 3.5mm Extension Cable (25 Feet) - 3.5mm Female To Male - Step Down Design for Smartphone Cases (MPC-35FM-25) extension cable: extend the cable Connection between your smartphone, tablet or MP3 player with a car stereo, portable speaker or other 3.5mm stereo Audio output. Step down design: accommodates phones & MP3 cases allowing plugs to be fully Seated even with bulky cases. Build: dual shielded high quality polished metal connectors with Gold Plated plugs. Compatibility: This 3.5mm (1/8 in) female-to-male cable works with 3.5mm cables and devices with 3.5mm Audio jacks (aux ports), like iPhone, iPod, and portable speakers. NOT COMPATIBLE: Mic/video function, Life proof cases or TRRS (Tip Ring Sleeve/Stereo Plus Microphone) cables. ALSO AVAILABLE IN: 6FT (Amazon Part# B00M8CPKUS), 12FT (B00M8CPWC4), 25FT (B00M8CQ7JQ)