Model Number: RKHP128 Brand Name: Rayking Key Specifications/Special Features: Microphone headset details:Hearing protection: International standard hearing protection functionDirectional: UnidirectionalMicrophone sensitivity: -38dB±3dBMicrophone impedance: 2.2k/ΩSpeaker frequency: 100-4800Hz

Speaker impedance: 150Ω

Speaker sensitivity: 116dB±3dB

Warranty: one year

RoHS: Yes

Product name: Noise cancelling microphone headset for telecom operators

Multiple connection mode

1. 3.5mm computer PC double plugs
2. RJ gold-plating 3U crystal head.

• Avoid producing current sound

3. QD connection

• Protect telephone connect
• Convenient for plug in use

4. USB connection

• Metal shell
• Fashionable and durable