ITEM NAME:For PC Laptop Office Call Center USB Headset Conference Business With Microphone Description: Compatibility: Support for Windows 2000/for XP and for Vista/ 7 operating systems, compatible for MAC OS X, plug and play, fully support USB2.0 full-speed bus, compatible with USB1.0/1.1 interface. Noise Reduction: Business USB Headset, noise-cancelling mic for crystal-clear conversations, block most of the background noise, protect your hearing. Adjustable Mic: The flexible and 330 degree rotation micorphone boom ensures accurate talking position for every word, You can adjust the microphone angle freely. All-Day Comfort: Super lightweight computer headset with adjustable headband to fit all head sizes, soft ear cushion enhance all-day wearing comfort. With Wire Control: Easy to access volume and mute controls in the cord, four buttons, you can quickly adjust the headset volume up/down, mute/un-mute the microphone or speaker. Application: Durable and stable over a long period of time. Great for Online courses, chat, call center, conference calls, webinar presentations and more.&;nbsp; Specification: Material: PU Leather, Plastic Color: Black Packing Size(LxWxH): About 17.5x15x5cm/6.89x5.9x1.97inch Cable length: About 2m/78.74inch Interface: USB2.0 Speaker diameter: 40mm Speaker Impedance: 32ÃŽ © Speaker Frequency: 20Hz -20KHz Speaker Sensitivity: 115dB Microphone: 6x5mm Microphone Sensitivity: -52dB Microphone Directivity: omnidirectional Microphone Impedance: ≠¤2.2KÃŽ © Microphone Frequency: 50Hz-15KHz Package includes: 1pc x USB 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..Great for Online courses, chat, call center, conference calls, webinar presentations and more. Adjustable Mic: The flexible and 330 degree rotation micorphone boom ensures accurate talking position for every word, You can adjust the microphone angle freely.