Durable onepiece shell for enhanced protection The compact, solid construction provides strong antifall durability while remaining easy to carry. Automatic timestamping and datebased file naming Recordings are automatically named by date, making organization and retrieval quick and simple. Smart power management to prevent data loss Detects low battery and automatically saves the current recording before power off, so you don't lose important audio. Multifunction device: recorder, MP3 player, and USB drive Functions as a voice recorder, an MP3 player, and a USB drive. Onekey recording and quick save to streamline operation. Realtime playback and easy file transfer when connected to a computer via USB. Realtime monitoring and hearing aid function Monitor the recording in real time for immediate verification. Includes a hearing aid function to support listening comfort during use. Key advantages and features Functionality: combines recording, playback, and data storage in one device. Compatibility: USB drive mode enables direct file transfer to and from a computer. Size and design: compact, durable onepiece shell designed for everyday use. Performance: reliable timestamping, automatic saving on low battery, and convenient onekey operation. Use scenarios Onsite interviews: start recording with one key, recordings are automatically dated, and you can review audio in real time. Lectures or meetings: capture talks clearly with automatic file naming, then listen back with the MP3 function. memos and data backup: use as a USB drive to transfer and store important audio files securely.