1. Speaker Size: 40mm
2. Microphone: 6.0X5.0mm
3. Directionality: omi-directional
4. Microphone impedance: 2.2k
5. Frequency range: 15Hz-20 KHz
6. LED working voltage: DC5V
7. Working current: headset Jack: USB+3.5mm 4Pin
8. Cable length: approx 2.1m
9. Good quality and long service life
10. In line with ergonomic design, comfortable to wear