HD voice recorder: 83.5*23*11mm, octa-core intelligent noise reduction, 1080p 160 ultra-wide-angle lens, password protection, mobile phone OTG, recording distance 30-80 meters, USB 2.0Digital voice recorder: independent camera button design, one-key audio and video synchronization, quiet recording/video recording, no light, no vibration, automatic saving after power failure,MICRO RECORDING DEVICE: Intelligent loop recording, when the memory is full, the latest video file will automatically overwrite the oldest video file, intelligent time stamp, built-in time chip, can be used as a legal basis.Wide application: The external microphone of the portable recorder can be used in various occasions such as conferences, interviews, lectures, classrooms, etc. It is an ideal gift for students, teachers, professors, scholars, writers and businessmen.COMPACT AND PORTABLE: This digital voice recorder is so lightweight and easy to use that you can carry it in your pocket or purse.