1. Material: aluminum?? 2. Cable length: 1.2m 3. Impedance: 32 ohms 4. Sensitivity: 105dB 5. Frequency response range: 20Hz-20KHz 6. Function: call listen to music wire control 7. Ergonomically designed, comfortable to wear without pressure on the ear 8. Built-in audio monitoring smart chip, easy to pick up sound, full and delicate sound quality, strong anti-interference ability
