products description:This call center USB headset helps you communicate with customers clearly and conveniently for better customer service. Noise cancelling function assures you a clear, stable and smooth sound during communication. And free adjustable earmuffs and stretchable headband make wearing so comfortable that you will not feel fatigue or pain after long time wearing. Furthermore, mute button allows you to power on/ off the microphone for more convenient use.Features: Noise Cancelling Communication - The call center headset comes with noise cancelling function to keep background noise outside and clean surrounding noise to create a clear communication. Comfortable Wearing - Earmuffs support 360° rotation. Headband can be sretched and put away. Makes it suitable for head of different sizes to give you comfortable wearing. No fatigue or pain even after long time wearing. Mute Function - A mute button in the in-line button allows you to power on/ off the microphone to make it more convenient to use. Universal Compatibility - This call center USB headset can be plugged into computer, telephone, desktop box and other devices to achieve clear, stable and smooth communication with no stuck or conflict. Hearing Protection - There is a in-line scroll, which helps you adjust volume freely to protect your hearing. Super Long Cable - Super long cable up to 250cm/ 98.43in allows you to take files that a little far away from you while answering a call to solve problems for customer immediately and more quickly. Super Durable - Precision design and high quality ABS make this call center headset very durable and reliable. It wil