Convert two round-head headphones (one horn and one mark) into a crystal-head interface headset for use on a telephone, on the premise that there must be two round-head headphones, not a plug-in phone headset
Mobile phone headsets won't work
Computer headset to phone headset dual 3.5mm to rj9
Crystal head headset converter connector conversion cable
Warm tip: due to the low power and impedance of ordinary computer headphones, compared with
Professional telephone headset effect still has certain difference, pursue sound quality effect of the kiss
Suggest other better products
This product is due to inconsistent production standards for telephone machines
Not applicable to all brand phones (90% compatible)
Right and left telephones).

1. there are too many types of materials to buy. you can send the list of materials you need directly to customer service and make it easy to shop quickly

4. please send a map or model to the customer and quote the goods you can't find
5 main materials and civilian tools
6. high price, large quantity can confirm the new price with customer service