Detailed Product Description Voice-Recording pen,MP3,Music Repeater,movable Hard Disk in oneMetal Shell DesignSupport MP3/WMA and other music formatsSuper Long Recording Time up to 576 hoursVOXVoice-Controlling RecordingTelephone RecorderWire Route(outside voice origin) RecorderDigital VolumeAudio Formats ConverterSupport Multi-LanguageFiles Upload/DownloadRecycling PlayRepeat Function/Build-in ...