The UX500 is a professional digital voice recorder/player that can record up to 4 Minutes of high quality speech or any other audio. The digital voice recorder incorporates a built-in microphone as well as a line-in audio jack for direct recording from any audio source. Recordings are stored in a non-volatile memory cell and will not be lost if power is disconnected. The circuit also features a Repeat (Looping) mode of operation and offer user friendly easy operation through 3 push button switches (Record, Play and Loop).