Headphone Adapter Compatible with cellphone Adapter Headphone Jack and 3.5 mm Headphone Jack Adapter Compatible with cellphone Accessories Support to music and all system-white High Quality Metal Joint: The specially crafted alumina housing makes the product more wearable, high-end and enhances anti-jamming capability. High quality chip : Features premium digital audio conversion chip delivering a premium audio / sound output without signal loss. Compatibility: works with cellphone 7/8,support to 11 system or later. Package include: 3-months replacement warranty.Any questions,please connect us in any time.