1. Ladder design connector, universal for iOS system with 3.5 interface and Android system 2. Support calls and volume adjustment, can realize phone calls, pause and play and switch songs when listening to songs, and can increase or decrease the volume 3. Oxygen-free copper conductor material, signal transmission is better and more stable, reducing distortion 4. Thickened gold-plated connectors 5. TPE wire, reduce loss, durable
