Descriptions: 1. With commercial grade broadband USB headphones, digital signal processing (DSP) and noise-canceling microphones, the headset can provide clear calls and acoustic impact protection (ASP) to protect your hearing. 2. The ultra-lightweight USB earphones with adjustable headband to suit all head sizes. The flexible microphone bracket can meet your preferences. The soft and high-quality ear pads can be worn throughout the day for highly comfort. 3. The accurate design, high-quality plastic, integrated headband structure, and flexible metal microphone bracket make the microphone of this one-ear USB headset more durable and sturdy. 4. With easy access volume and mute controls in the power cord, you can quickly adjust the volume of the headset up or down, mute or unmute the microphone or speaker. 5. Directly connect the headset to a USB compatible device without driver. The headset is suitable for computers, laptops, PCs, for Microsoft Lync, for Cisco and most leading UC platforms. Specifications: Name: Computer Headset Plug diameter: USB Whether wireless headphones: wired headphones Speaker diameter: 40MM Frequency response range: 20-20000 Type: headphone Headset type: headset Headphone output source: PC computer Sound principle: moving coil Distortion rate: 1 Line length: 1.8M Sensitivity: 105 Headphone cable: PVC cable With or without microphone: yes Impedance: 32 ohms Plug type: in-line Ear shell material: ABS length: 1.8M Packing List: 1 x Headphone