HiFi speakers and HD noise reduction recording Clear, quality recording at 1536 kbps thanks to an external builtin frequency speaker unit and a custom metal diaphragm. Ideal for capturing important content such as entire classroom sessions, forensics, and meetings. Wireless Bluetooth 5.0 with stereo solution Uses a speed Bluetooth 5.0 chip and provides a stable stereo wireless listening and streaming experience. HiFi lossless sound quality and easy operation Lossless core decoding chip supports mainstream lossless music formats for better sound fidelity. Capacitive touch controls enable silent operation, reducing interference and allowing smooth, lag use. Supports TXT format playback and can run in the background for uninterrupted use. Key benefits fidelity recording and playback in educational, professional, and forensic settings. Quiet, hassle operation with touch controls and no disturbing noise. Broad device compatibility and reliable wireless performance with BT 5.0 stereo support. Durable design features a custom metal diaphragm for clear, precise sound reproduction. Use scenarios Classroom recording: capture every lecture clearly for review and study, even in larger rooms. Meetings and conferences: document discussions with clarity and play back in real time without cables. Forensics and field interviews: record important content discreetly with dependable sound quality and silent operation.