Brand New! Product Description Eliminates up to 99% of background noise. Put into use of the latest noise cancellation technology to make you can hear and be heard clearly wherever you are. Very suitable for trucker, receptionists, call center, construction sites. Built-in noise reduction microphone and Dynamic Speaker. Clear audio offers crystal sound, can let you hear and get heard clearly, enjoy the freedom of wireless mobile calls and music while driving, running and working. This Bluetooth headset comes with a USB dongle in the package, you can use our Bluetooth headset on a computers without Bluetooth function, just plug the USB dongle into your PC, turn on the Bluetooth headset, they will pair automatically. Perfect for call centers, offices, remote work, online classes, Skype, Zoom, Google Meetings, and more. The Mopchnic wireless headset adapts the latest Bluetooth version 5.0, which provides more stable connection and it?s compatible with cell phones, laptops, computers and other Bluetooth devices. You can use the USB dongle to connect to devices that don?t have Bluetooth capabilities. Besides, this Bluetooth headset with microphone supports two device connections. This Bluetooth Headset supports Siri voice assistant and mute switch. The independent MUTE button on the microphone is at your fingertips. Voice prompt mute on/off. One key to turn on/off the Bluetooth headset and enter pairing mode, single click to answer, reject and hang up calls. This Bluetooth headset provides you with a comfortable wearing experience for intensive use throughout the day. Comfortable and breathable earmuff ensure all-day comfort, and the adjustable headband fits any head shape without slipping off your head. This Bluetooth headset can be fully charged in 1.5 hours (Type-C charging port) and provides up to 35 hours of talk time or 40 hours of music playback (70% volume) when fully charged.