1DD+4B Flexible Tuning Tubes Hi-Res Audio

• The dynamic armatures feature two Knowles composite drivers, providing excellent mid-range vocals and high-frequency overtones. These Knowles drivers are custom-made mid-bass drivers with rear ports, resulting in higher mid-bass frequencies than standard drivers without rear ports, and also significantly better vocals.
• Bio-diaphragm dynamic coil
• The wire is a four-core copper-silver alloy silver-plated wire, which is second only to pure silver wire in conductivity. Each core wire has 82 wires with a diameter of 0.05 mm. The base wire has good conductivity, is thick enough, and has strong signal transmission capability.
• Four different colored tuning tubes. You can get different sounds by changing different tuning tubes.
• Six ear tips in different sizes, ranging from 9mm to 14.2mm in diameter and two hardness levels, provide a comfortable fit for all ear cavities.