Brief: 1. Accurate Microphone-boom adjustment. 2. Protection circuit to prevent hearing impairment 3. Special sponge Cushion 4. The cable made by special fibre, tensile strength reaches to 20 kg 5. Plastic boom can bend whatever without break
Type: 1. RJ09 connect to QD_Connect to Dialer or telephone, IP Phone, USB sound card adapter 2.3.5 Plug connect to QD_Connect to PC.
Suitable: Bigger Call Center or Noise environment and More seats to use