RJ9 Headset connecting Cord with volume controller and mute key

Volume controller: Speaker volume up and down
Microphone mute key: On and off
Connect headset to various  IP Phone, telephone or call box.
RJ9 module can be changed to match different kinds of IP Phones

Accessories Options: 
With P-QD or G-QD, which can be widely compatible with most call center headsets

Structure Features:
QD (Quick Disconnect) cord perfectly suited for people who use headset regularly. You can hold on calls and move away from desk easily without removing the headset off your head