1.Noise Cancellation Performance: 30dB.2.Frequency is 100-10KHz.3.USB Power Supply: DC 5V 0.5A.4.Headset MIC Sensitivity: -40dB (Recommended).5. Compatible with VT RJ9 Headsets and mainstream IP Phone...
The adapter is easy to use and does not require the installation of additional devices. It is plug and play, and the portable and compact design is easy to carry. Durable and sturdy, it has been proven to be suitable for your use...