KZ-ZEX PRO Electrostatic Coil Iron Hybrid In-Ear Headphones, With Microphone, Without Microphone

1. Wire: silver-plated double parallel wire.
2. Frequency response range: 20-40000KHZ
3. Plug Type: 3.5mm
4. Pin type: 0.75mm
5. Sensitivity: 104dB
6. Ergonomic design, comfortable and stable to wear.
7. Low voltage electrostatic unit, double magnetic moving coil unit, high frequency moving iron unit.