Naming: The recorder has a time stamp, and the recording files are named after the time, which is convenient for you to find the files you need.Voice playback: This recording device supports MP3, WMA and WAV playback, and can be operated in FF and FR to help you listen to the content easily.Recording: This recording pen supports ADPCM format recording with 192Kbit technology, and the voice-activated recording is about 50dB. It can automatically divide the recording, saving you effort.Button control: You can control the button adjustment mode, including regular recording, voice-activated recording and shutdown. In addition, this recorder is designed with a delete function for your convenience.Wide range of uses: This small listening device is suitable for lectures, conferences, interviews and other occasions to record important content.