HiFi lossless sound quality Lossless core decoding chip enables better parsing of mainstream lossless music formats. Capacitive touch design offers silent operation, reducing interference with others and providing smooth, press control. Supports formats and background playback. HiFi speakers and HD noise reduction recording External builtin frequency speaker unit plus a custom metal diaphragm. 1536 kbps recording bitrate allows clear capture of important content such as entire classroom recordings, forensics, and meetings. Wireless Bluetooth 5.0 speed Bluetooth chip with a stereo solution for reliable wireless listening and streaming. Use scenarios Classroom and education: record lectures with clear audio and listen back in real time or later. Meetings and interviews: capture conversations with fidelity for documentation and review. listening and standby use: wireless, hands operation with fidelity sound for daily listening.