Description: Clear Sound: Built-in noise reduction microphone picks-up your voice loud and clear, also the flexible microphone boom ensures accurate talking position for every word. Adjustable: Super lightweight computer headset with adjustable headband to fit all head sizes. Simple Audio Control: Easy to access volume and mute controls in the cord, you can quickly adjust the headset volume up/down, mute/un-mute the microphone or speaker. Application: Great choice for Online courses, Skype chat, call center, conference calls, webinar presentations and more. Usage: Perfect for those who take a high volume of calls each day, such as call center staff, office workers, customer service users, phone job staff etc. Plug And Play: The USB headphone is plug and play, no software installation is required. Specification: Material: ABS+PVC cable Model: 900, 440 Color: 900: black; 440: black+green Cable length(approx): 2m/78.74inch Interface: USB Speaker diameter: 30mm Diaphragm: 32 ohm Frequency response: 20-100KHz Whether to bring a microphone: Yes Usage: head-mounted Package: 1 pc x wired headset Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.Multi Purpose & Wide Compatibility: This headset can be used mainly for chatting, secondarily for music, and if needed, as a backup to a priority gamer headset (It is NOT specially designed for gaming, please DON'T compare it with professional gaming headsets); Wide compatible with Windows 2000/7/8/10/XP/Vista, M-ac OS X, iOS, Android, Tablet PC. Support USB V3.0 and USB V2.0 interface, plug and play. Perfect for those who take a high volume of calls each day, such as call center staff, office workers, customer service users, phone job staff etc. Simple Audio Control: Easy to access volume and mute controls in the cord, you can quickly adjust the headset volume up/down, mute/un-mute the microphone or speaker. Adjustable: Super lightweight computer headset with adjustable headband to fit all head sizes. Plug And Play: The USB headphone is plug and play, no software installation is required. Plug And Play&Wide Compatiblity: The Usb Headset Doesn'T Need Drivers Required, Which Is Connected Directly To A Usb-Compatible Device. Suitable For Computers, Laptops, Pc, Lync, Skype, And Most Leading Uc Platforms.