1. Plug: 3.5mm
2. Frequency response range: 20-20000Hz
3. Impedance: 16 ohms
4. Sensitivity: 95dB
5. Earplugs/earmuffs material: aluminum alloy
6. Headphone cable material: TPE
7. Horn diameter: about 10mm
8. Wire length: about 1.2m
9. Weight: about 15g

Features:
1. 9D stereo surround sound, double moving coil unit, increase the sense of low frequency
2. Multi-function wire control, easy to operate
2. Built-in high-definition silicon microphone, high-definition call, no noise
3. L-shaped elbow 90 degree design, durable
4. The interface is reinforced, not easy to break
5. Quad-core surround sound + dual-core bass enhancement, no noise, no sound leakage
6. 10mm large moving coil, carbon fiber composite diaphragm, restore music with bright high frequency, full mid frequency, and deep and elastic low frequency
7. Sloping design, semi-in-ear earplugs, comfortable to wear