Advanced voice pickup and noise reduction An advanced sound pickup and noise reduction algorithm actively recognizes human voices by scene, reduces environmental noise interference, and minimizes impurities to improve clarity of the received audio. Dualmode operation Bluetooth and cardinsertable dual mode switching: switch between wireless Bluetooth use and cardbased playback as needed. Bluetooth 5.3 for stable, smooth transmission Equipped with a Bluetooth 5.3 chip for smoother transmission, stable connections, and efficient performance. Triplefunction experience Not only Bluetooth earphones but also MP3 playback and recording device capabilities. Supports playback from Bluetooth sources or inserted cards, and can function as a recording device when needed. Key attributes Function: voice recognition, noise reduction, dualmode playback, MP3 playback, and recording. Compatibility: works with Bluetoothenabled devices; supports cardbased playback via inserted card. Performance: sceneaware voice processing, reduced environmental noise, stable Bluetooth 5.3 transmission. Size and material: not specified in this description; please refer to the official product specifications for physical details. Use scenarios Professional meetings or interviews: scenebased voice recognition and noise reduction help capture clear dialogue with reduced background noise. Onthego listening and offline playback: switch to cardbased playback for MP3s without relying on a phone; or use Bluetooth for streaming. Lectures, field work, or recording tasks: use as a recording device to capture audio data when you need portability and versatility.