Descriptions:

The sound filter is about 4mm, best compatible with earphones nozzle diameter 4 to 5mm.

Sound Filter - 2.0
Tuning high-range close to reference sound with reduced peak and coloring.

High durability
Using Polyamide material to minimize the decrease in filter durability during adhesion and removal.

Coated Mesh
The filter sometimes loses its function due to contaminants such as earwax. Coated mesh is free from contamination and condensation by temperature differences.