?USB Dongle & Global Warranty?: The USB Dongle (Included) of this wireless headset with mic can connect devices without Bluetooth, more stable with lower transition latency. For PC/Computer/Laptop/Smartphone/work from home/Movie/Music/Call Center/Online Meetings. VONZTEK try to ensure every purchase is happy. We offer 30 days of money back service and free replacement warranty. If you have any technical questions, please feel free to contact our 24 Hours customer service. ?Comfortable Design & Rotatable Mic?: The ultra-light design of this PC headset weighs only 120g/4.5oz, giving zero pressure on your head. The computer headset with microphone also has Soft Breathable Earpads and Adjustable Leather Headband provide you all-day comfort. Equipped with 270° rotatable microphone to ensure you adjust the mic to your best position and catch your voice clearer. ?Strong Battery Life & Long Connection Range?: The High Endurance Battery of this wireless headset for computer can support up to 26hrs of talking time and 210hrs of standby time with only 2hrs of fully charged time. The estimated connectivity range of the headset with mic is around 33ft so that you can get away from your screen during working hours. ?Extensive Compatibility & Multipoint Connectivity?: The headphones with microphone use Bluetooth V5.0 Tech to ensure it is broadly compatible with most conference platforms. Multi-point Connection is also applied so that you can connect with two devices simultaneously, easily switching from one device to another to free up your hand. Ideal for Facetime, Skype, VoIP, Webinar, MS Team, Zoom, Dragon, GoToMeeting, etc. ?ENC Noise Shield & Mute Function?: VONZTEK Bluetooth headphone adopts advanced ENC Noise Reduction Tech which can filter out 99.6% of background noise automatically while you are on a call, leading to a ultra-clear calling experience. The wireless headphone is equied with an Individual Mute Button which is able to mute your voice effortlessly at anytime, protecting your own privacy.