TSV U11/T900 Business-grade Wideband USB Headphone for office: with DSP, ASP, noise-canceling mic High-quality stereo sound: The full range of 40MM/30MM speakers delivers superior audio quality Noise-canceling mic: 270-degree rotatable mic ensures optimal noise cancellation, picks up your voice loud & clear Comfortable wear feeling: The ergonomic design makes it snugly fits your ears for a long time wearing Easy to use/control: Online volume and mute control, volume up/down or mute/un-mute the microphone or speaker Plug and play: No drivers needed, directly connect the headset to USB-compatible devices. Ultra-lightweight USB headset: Lightweight Design with an adjustable soft headband to fit all head sizes. Wide compatibility: Compatible with Windows 7/8/8.1/10/XP, Mac OS X Tablet PC. Package includes: 1 x U11 USB Headset