?LONG BATTERY LIFE & GUARANTEE?The Bluetooth PC headset offers up to 25 hours of talk time and 250 hours of standby time with full charge of 2 hours. With magnetic charging dock, no more frustration of adapting headset charging socket to the charging station. 30 DAYS MONEY BACK GUARANTEE & 2 YEARS WARRANTY from MAIRDI. ?SUPPORT MULTIPOINT CONNECTIVITY?The dual connectivity technology enables you to connect to computer and another Bluetooth device at the same time. Highly recommended for online courses, call centers, offices, home work, perfect for Microsoft Teams, Cisco Jabber, Zooms, voip calls, business meetings, webinars, Skype chats, telephone conferences. ?BLUETOOTH HEADSET WITH COMFORTABLE DESIGN?The lightweight wireless headphone features a padded headband and breathable protein skin earmuffs for maximum comfort. The 330 degree rotatable microphone is reversible so that the earphones can be used on the right or left side. The adjustable headband allows you to find the perfect fit without restrictions and offers excellent durability. ?NOISE CANCELLATION MICROPHONE AND MIC MUTE FUNCTION?The wireless phone headset filters up to 90% transmission noises, so that the other party can hear crystal clear voice even in noisy evironment. One-press mute button can turn on and off microphone mute during the call. Tip: The microphone mute only works with calls from mobile phones, some third-party software and PC-based applications are incompatible. ?BLUETOOTH 5.1 HEADSET WITH USB DONGLE?The wireless headset with advanced Bluetooth technology offers roam range of 30 meters, allowing headset to be connected to your PC, smartphone or tablet away from your desk. It supports desktop or laptop without Bluetooth function via USB Bluetooth adapter. Tip: Answering calls is incompatible with some third-party software and PC-based applications (only works for Microsoft Teams and Skype for Business).