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
