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 iPhone 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: Perfect design for your iPhone 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 iphone 8 / X. | After-service: Beatife provides 1-Year-warranty. If you are not satisfied with your purchase for any reason, please contact our customer service team directly. We will be greatly accept return or refund.