Professional zinc alloy shell for superior durability and anti-fall protection High-definition lossless linear recording with professional pen chip for crystal-clear audio Voice-activated recording mode to save storage and capture only when sound is detected Supports 22 languages including English, Chinese, Russian, Korean, and Japanese Automatic timestamp and file naming by date for easy organization and retrieval Set-and-forget functionality with scheduled recording start and switch-on times Ideal for lectures, meetings, interviews, and personal memos with 72-hour non-stop capability