KZ-ZST X Ring Iron Hybrid Driver In-Ear Noise Cancelling Earphone, With Microphone, Without Microphone

1. 10mm large diameter double magnetic moving coil, fast transient response.
2. Frequency response range: 20-40KHZ
3. Plug Type: 3.5mm
4. Pin type: 0.75mm
5. Sensitivity: 107dB
6. Ergonomic design, comfortable and stable to wear.
7. Electronic crossover + physical structure double tuning.