1. In-ear design, comfortable to wear 2. Dual microphone design, clear sound quality 3. Support wire control, switch modes at will, simple operation 4. Pluggable long wheat, bend at will at 360 degrees 5. L-shaped plug, easy to use without blocking your hands 6. Speaker size: 10mm 7. Socket type: 3.5mm 8. Frequency response: 20Hz-20KHz 9. Microphone sensitivity: 115dB
