Main Features: ?? Integrated 10mm dynamic unit and 90035 balanced armatures units, shocking bass and high-fidelity listening experience. ?? 20 - 40KHz super wide frequency range, offers board sound field and captures more abundant sound details, immersive sound effect. ?? Detachable design, easy to assemble and convenient to maintain, you can replace it as your need, satisfies various demands on lines. ?? 3.5mm gold-plated L-bend jack, compatible with the majority of electronic devices, like phones, computer, walkman, MP3 and so on. ?? Built-in thin iron wire in cord, you can wear it and hang on your ear so as to avoid falling or dropping while doing sports. ?? High definition microphone supports clear and smooth conversation. ?? On-cord control, easy to pause / play music, switch songs and answer / refuse call, adjust volume.