It is a high quality recording and noise reduction function that can record high quality sound for you, helping you to capture the speaker's words in interviews, speeches and conferences, so you won't miss the highlights.This recorder has plenty of memory, enough space for 30 hours of recording. It can also be used as an MP3 player/music player, allowing you to relax while studyingWhen voice-activated recording is turned on, the voice recorder device will automatically start recording when surrounding sound decibel changes.This recorder allows writing while recording, which makes it a perfect gift for students, lawyers, business people, teachers, etc. It is ideal for recording meetings, memos, lectures, interviews, etc.