KZ ZSR 6-unit Ring Iron In-ear Wired Earphone, Standard Version(Black)

1. Material: plastic2. The four-layer CCAW voice coil brings strong bass impact, making every rhythm of the music more dynamic3. Ergonomic design, comfortable to wear4. Humanized pluggable design, expandable and upgradeable Bluetooth headset5. Precisely and accurately calculate the sound characteristics of each unit, improve the transient response ability, and highlight various subtle details in the music6. Frequency response range: 10-40000Hz7. Cable length: 120+/-5cm8. Impedance: 22 ohms9. Sensitivity: 107db10. Plug type: 3.5mm11. Pin type: 0.75mm12. Sounding principle: ring-iron mixing (1DD+2BA)