Description: This USB cordless headset with microphone adopts noise cancelling function to offer a clear and smooth communication to you to have better customer service. And 360° rotary earmuffs and stretchable headband give you a comfortable wearing. Helps you get rid of fatigue and pain after long time wearing. Furthermore, USB plug allows it to be plugged into various devices like computer, telephone, desktop box, etc. Features: 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. Hearing Protection - There is an in-line scroll, which helps you adjust volume freely to protect your hearing. Super Durable - Precision design and high quality ABS make this call center headset very durable and reliable. It will last a very long time. Specifications: Product type: USB Cordless Headset with Microphone Plug: USB Cable length: approx. 250cm/ 98.43in Microphone: YES Impedance: 150Ω Earmuff rotation: 360° Headband: StretchableSuitable: For computer, telephone, desktop box, other devices Package size: approx. 19.5 * 14.5 * 4.5 cm/ 7.68 * 5.71 * 1.77 in Package weight: 168g Package List: 1 * USB Cordless Headset with Microphone 1 * User Manual