Double turn 3.5 MM RJ9 crystal head computer headphones to telephone switch

RJ9 Plug to 2 X 3.5mm Jack for PC Headset to Avaya 1600 9600 SNOM Yealink Phones;
Computer headset to telephone headset Dual 3.5MM to RJ9 crystal head Headphone converter Connector conversion line;
Tips: Because the power and impedance of ordinary computer headsets are relatively low, there is still a certain gap compared with the professional telephone headsets. The pros who pursue high quality effects suggest that it is better to choose professional products.
Due to the inconsistent production standards of telephones, this product is not applicable to all branded telephones.(can be compatible with 90% telephone)