Key benefits Automatic timestamped file naming: recordings are saved with datebased filenames for easy organization and retrieval. Auto save on low battery: detects low power and automatically saves the ongoing recording before power off, reducing data loss. Realtime monitoring and hearing aid function: monitor audio in real time and enjoy a hearing aid style function for immediate listening. Multifunction operation: functions as a voice recorder, MP3 player, and USB drive for versatile use. Simple onekey controls: one key to start recording and one key to save audio for quick, reliable operation. Durable onepiece shell: designed for antifall protection and reliable everyday use. Core features Timestamp and datebased file naming: every recording is saved with a timestamp to keep files organized by date. Low battery protection: the device automatically saves recordings when battery is low to prevent data loss. Realtime monitoring: listen to recordings as they are being captured; suitable for situations requiring immediate feedback. Hearing aid function: supports live monitoring and listening enhancements as part of its functional design. Multimode functionality: serves as a voice recorder, MP3 player, and USB drive, expanding its practical use. Onekey operation: dedicated button to start recording and another to save audio, enabling quick operation. Onepiece shell and durability: robust, seamless exterior designed to resist drops and everyday wear. Physical design and performance Onepiece shell for a streamlined, durable build. Antifall design to withstand daily use and minor drops. Compatibility and usage Ultrasimple workflow combining recording, playback (MP3), and USB drive storage in one device. File management handled via datestamped names for easy sorting and retrieval. Use scenarios Interview or meeting notes: start recording with a single button, files are automatically dated, and lowbattery protection ensures you don't lose the session. Field research or journalism: record discreetly with realtime monitoring and save audio readily for later analysis; files can be accessed as a USB drive. memo and playback: capture quick notes on the go, then switch to MP3 playback or use as portable USB storage for media and documents.