ENC Noise Cancelling & Clear Calls: This wireless headset blocks most distracting background noise. It effectively filters out unwanted ambient sounds in busy environments, from bustling offices to noisy airports. An independent mute button allows you to instantly turn off the mic for quick privacy whenever you need. Perfectly tailored for remote workers, online conferences and business trips. Dual-Pairing & Wide Compatibility: Bluetooth 5.3 supports connection to two devices at once. This Bluetooth headset with microphone delivers dual flexible connection solutions: fast Bluetooth pairing and plug-and-play USB dongle. It works perfectly with cell phones, tablets and computers. One-key operation to answer, reject, end calls and redial the last number; voice alerts for connection status, mute mode, low battery and incoming calls. The MFB button only supports answering mobile phone calls. Extended Battery & Easy Charging: The 500mAh battery provides up to 80 hours of music playback and 50 hours of talk time at 50% volume. It easily powers long meetings, full workdays and business trips, completely freeing you from battery anxiety. Equipped with a plug-and-play charging base, the headset enables effortless recharging anytime. Meanwhile, the built-in USB dongle storage slot keeps your adapter securely stored and always within easy reach. Crystal Stereo Sound for Calls & Music: Designed with high-definition stereo drivers, this wireless headset delivers rich, balanced and full-bodied sound. It ensures crisp, clear audio for online meetings, video calls and conference discussions, while also bringing an immersive listening experience for music, videos and daily entertainment. Whether you are focusing on office work or relaxing in your spare time, it presents outstanding sound quality for all-day comfort. Ultra Comfortable & All-Day Wear: Lightweight and travel-friendly, the retractable headband fits different head sizes. The 270° reversible boom mic supports left or right ear use. The ergonomic design reduces head pressure, making it ideal for all-day office work, call center duty and remote work with no discomfort.