KZ AST 24-unit Balance Armature Monitor HiFi In-Ear Wired Earphone With Mic(Black)

1. Material: metal + plastic2. 24 balanced armature units, covering mid, high and bass frequency analysis, restore sound details3. Humanized pluggable design, can be upgraded to Bluetooth headset4. Zinc alloy shell, strong and wear-resistant5. 200-core transparent silver-plated wire to reduce distortion6. Ergonomic design, comfortable to wear7. Frequency response range: 10-40000Hz8. Impedance: 30 ohms9. Sensitivity: 103dB10. Plug type: 3.5mm 11. Pin type: 0.75mm12. Cable length: 1.2m+/-3cm