Portable Recording Studio - Universal - Voice Activated Digital Audio Recorder, MP3 Player, USB Pen, Built-in HD Microphone(Black) Highlights Universal Voice Activated Digital Audio Recorder, MP3 Player, USB Pen, HD Microphone Built-in(Black) Voice Activated Digital Audio Voice Recorder MP3 Player Non Stop USB Pen built in HD microphone | Digital Voice Recorder Features: 1. Small size is easy to hide, long standby time, keep recording, never go to light. 2. Loop recording, when the recording data is full of memory, it will automatically delete the first recording data and continue loop recording. 3. Strong magnetic adsorption, free installation, closely fit, can be installed at anywhere as needed. 4. One-button recording does not need to be activated, simple and quick, push right to start recording. Push left, for close and keep recording. 5. Professional noise reduction and zero noise.