Use 6N OCC single crystal silver as conductor. Coverd with PVC soft skin. 30AWG * 4 strands  structure.

The sound background is clean. The lines of voice are compact and no unnecessary noise. 

You can obviously feel the high-frequency part. Sounds ethereal but clean and moist. As if the voice is vibrating in your heart. 

Made by hand. It is first choice upgrade for the in-ear headphone enthusiasts.