KZ ZSN Pro X Ring Iron Hybrid Drive Metal In-ear Wired Earphone, Standard Version(Black)

1. Material: metal + plastic2. By adjusting the magnetic gap of the moving coil, the eddy current loss is reduced and the stroke is increased, presenting rich low-frequency power and providing a wide frequency response3. 4 strands of 100 cores are tightly wound, and the silver-plated layer effectively enhances the detail resolution and reduces the loss and distortion in signal transmission4. Ergonomic design, comfortable to wear5. Humanized pluggable design, expandable and upgradeable Bluetooth headset6. Frequency response range: 7-40000Hz7. Cable length: 125+/-5cm8. Impedance: 25 ohms9. Sensitivity: 112db10. Plug type: 3.5mm11. Pin type: 0.75mm