[High-quality long-term] Using DSP noise reduction technology to filter out environmental noise, high-quality recording, and restore the real scene. Supports WAV 1536kbps, can record continuously for more than 20 hours and play for 10 hours.[Easy operation] Press the REC button to start recording, built-in high-quality speakers, listen to it anytime, anywhere.[Voice activated recording] Set the AVR voice activation function to record only when the speaker is speaking, reducing blank segments and effectively saving recording space and your listening time.[Multi-function] MP3 function, U disk, A-B playback, delete function. Support audio formats: MP3, APE, FLAC, WMA, WAV, OGG, etc.[Wide scope of application] This product is small in size and light in weight; it is easy to carry, and can be widely used in teaching, lectures, conversations, interviews, podcasts and other fields. Especially suitable for students, teachers, professors, reporters, business people, writers, bloggers and other people who want to record special moments and good memories with voice.