Extend 3.5mm AUX Connection: Ugreen 3.5mm audio extension cable extends the connection between your iPhone, iPod, MP3 player, DVD, smartphones, tablet, laptop, smart tv, echo dot or any other 3.5mm aux port equipped devices to your headphone, earphone, amplifier, speaker, car stereo or home theater system etc, making music play without location and time limitations. | Microphone Function: Microphone function is available for devices with a 3.5mm audio port, not only can listen to songs, but also voice calls. | Protect Devices' AUX Port: This aux extender cable is a great solution to protect the 3.5mm audio port of your devices from repeat plugging and unplugging. Greatly extend the lifespan of our devices. It's troublesome to buy a new device, while it's rather easy to get a 3.5mm auxiliary audio lead. | Sound Quality: Due to three shieldings(copper core, cotton thread, and TPE jacket), headphone jack extension cable provides better protection to audio signal during transmission and offers the excellent sound experience to you. | Advanced Material: Pure copper provides maximum conductivity and durability. Gold plated connectors resist corrosion and ensure optimum sound quality. Tangle-free nylon braid lets the cable avoid bending and easier to store up. The step-down design makes it possible to work without removing your phone/tablet case.