KZ-ZST X 1.25m Ring Iron Hybrid Driver In-Ear Noise Cancelling Earphone, Style:Without Microphone(Black)

1. 10mm large diameter double magnetic moving coil, fast transient response.2. Frequency response range: 20-40KHZ3. Plug Type: 3.5mm4. Pin type: 0.75mm5. Sensitivity: 107dB6. Ergonomic design, comfortable and stable to wear.7. Electronic crossover + physical structure double tuning.