Automatic timestamped recording: files are named by date automatically to keep recordings organized. Lowbattery protection: detects low power and automatically saves recording files before the device powers off. Durable onepiece shell: antifall design for reliable use in everyday environments. Realtime monitoring and hearing aid function: monitor the recording in real time and access the hearing aid function as needed. 3in1 functionality: works as a voice recorder, MP3 player, and USB drive. Simple operation: one key to start recording and one key to save audio. Practical use scenarios: Meetings and lectures: capture discussions with datestamped files, ensuring easy organization and retrieval. Field interviews and research: record interviews discreetly, monitor live playback, and save important clips with a single action. listening and data storage: use as an MP3 player and USB drive, with convenient access to stored recordings. Key attributes: Function: voice recording, MP3 playback, USB storage, with timestamped file management. Compatibility: supports multifunction use as recorder, media player, and USB drive. Size and material: onepiece shell construction designed for durability and antifall performance. Performance: reliable autosave on low battery and straightforward onekey controls for quick recording and saving.