TNSO q, 14 Ounce, WHITE-072 Efficient Transmission and Stable Signal: 100% Copper wire core offers clear crisp sound quality and ensure the stability of transmission for better and comfortable experience. Plug and Play: No extra software, you just need to plug and enjoy fidelity sound quality. Allow you to use your existing 3.5mm headphones with the new phone 7 / 7 Plus. High Quality Metal Joint Produced with First-Class Technology: The specially crafted alumina housing makes the product more wearable, high-end and enhances anti-jamming capability. Designed for Your daily Life: easy to bring with you outside and ensure the high quality of music, this item is perfect for your daily life or leisure time. Perfect design for your phone 7 / 7 Plus, allowing you to enjoy music, enjoy digital life.This product is not compatible ios 10.3 above, is not compatible with ios11 and is not compatible with phone 8 / X.