Bluetooth 5.0 Technology & Stable Connection: Adopted Bluetooth V5.0 chip for faster connection and less power consumption. Features a long wireless range of 33ft,without signal loss or music dropouts. Stable Bluetooth headset for cell phones, freedom to pair with two Bluetooth devices simultaneously. Noise Cancelling Headset: The Bluetooth headset with noise cancelling mic can eliminate disruptive background noise without missing any single conversation details even in noisy place. Allowing you to enjoy clear phone calls and high-quality music wherever. All Day Comfort& Ergonomic Design: Bluetooth headset features a rotating ear cap, earmuff made from a Ultra soft protein leather over the ear. The angle can be adjusted freely and will be worn stably with a large size adjustable headband (and a soft leather pad to reduce the pressure to your head), rotates for a comfortable fit. No more burden on ears even after wearing it for a long time. Unique Design: Our office wireless headset supports up to 25 hours for talking in a 4-hour charging, over 120 hours standby time; 330° rotatable boom mic to suit for the left or right ear; Mute button key on the Microphone boom it is easily to turn the microphone off and on during the calling