1. Feature description: It has a metal body, is small, durable and delicate. It is easy to operate, including starting recording and closing to save the recording. 2. For voice recording, it automatically starts recording when sound is detected and pauses when no sound is heard. It supports music playback in Mp3, wav, and Wma formats, which is both interesting and practical. 3. The recording file name is the recording time, and it supports file encryption. The ultra - thin and mini recorder is newly upgraded, breaking the traditional recording mode. 4. The ultra - thin digital voice recorder has an ultra - thin metal body and is a durable recorder. There is no indicator light flashing during recording. 5. It has a built - in magnet, which is easy to adsorb on the metal surface and convenient to install. The operation is simple. Starting and closing to save the recording can be easily done. 6. The file names are clearly sorted. The recording file names contain the recording time, which is convenient for searching and sorting. 7. The mini but more powerful remote recorder has an automatic recording function and a voice - free standby mode, which improves efficiency, saves energy, and can record continuously for a long time. 8. This powerful magnetic recorder can be carried around and can be placed in your pocket, under the table, or in the car.