ROCK Stylish 3.5mm Multifunctional Audio Cable for AUX Devices, In-line Control, Tangle-free, High Flexibility (Rose Gold) Connect it to your smartphone and AUX device, with in-line control, you can easily switch songs, hands-free calls while driving. HIFI Cable, uses Oxygen-Free Cooper, features excellent conductivity, which transmits the qualified sound. Standard 3.5mm plug with gold-plated process, durable in use. Compatible with AUX input and smartphones. Made of environmental-friendly and RoHS-standard TPE material, which features anti-twisting and durable. The aluminum alloy is processed by precise craft with exquisite knurling, looks aesthetic and stylish.