Connectors: 3.5mm male to 3.5mm Female Unique Slim connector design fits most iPod and iPhone 3.5mm stereo jacks without having to remove the protective casing 3.5mm TRS mini-stereo connectors, with molded PVC strain relief Extend the distance from your iPod, MP3 player to any audio output devices 90% Spiral Wrapped Connector provides shielding against EMI and RFI interference