1. Ergonomics design , steady and comfortable to wear. 2. Electroplating design, simple but quite fashionable. 3. Stereo sound, just enioy listening to music. 4. High quality TPE wire, not easy twining. 5. Mini key wire control, flexible to switch. 6. Widely compatible with 3.5mm interface devices. 7. Extra 4 spare earbuds inside.