Lightweight and Portable: This portable digital voice recorder is small and lightweight, requires minimal space, suitable for almost any pocket. The lightweight design allows you to record at any location without using a smartphone. Easy to Use: The operation interface is simple and the navigation is easier. Make your use easier. You can record with one touch and start recording quickly within 3 seconds. Multifunctional: As a digital voice recorder, a phone conversation recorder, and it is also an MP3 player to listen to musics , the USB storage flash disk supports WMA, ASF and WAV formats. The audio documents will be stored in WAV form and they can be played easily through all media players. Widely Application: It is an excellent voice recorder for class, meeting, speech, lecture, interviews, doctor's advice, evidence collection, spy recording, etc. A perfect gift for students, writers, professionals and others! Durable and good sound quality: Built-in lithium battery, rechargeable device. A full charge can record up to 30 hours at a time. And the sound quality is clear.