Ergonomic design with zipper 2. Unique and fashion, suitable for all-ages. 3. Bass boost system: superior sound with enhanced bass! 4. Mic and controls: built-in high-grade mic and controls 5. Synthetic cord covered cable, durable, use for long time 6. On/off button stop/start music or stop phone talking, free to unlock phone. 7. Microphone convenient to talk phone. 8. 3.5Mm audio jackBeatsWise