The DuVoice DVUSER250 is a voice recorder that can be used to capture and store audio recordings. The recorder is equipped with a built-in microphone and a speaker, which allows you to record audio without having to use a separate audio recorder. The recorder can be used to capture audio from a variety of sources, including telephone calls, meetings, and conversations. The recorder also has a number of features that make it easy to use, including a timer function and a recording mode that allows you to record continuously.