Simple Operation- Switch on your voice recorder, one button for recording. press the "REC", start the recording, press "STOP", end the recording, press PLAY, listen what you just recorded, and then Press A-B, select your important section to repeat. Easy to playback with inner powerful speaker, support external sound speaker playback, let you enjoy superior recording quality.Clear Voice Record- high quality recording with noise redution, you will get super clear recorded voice, the sensitive microphone help you to catch speaker's words in an interview, lectures, meetings.Voice Activated Recording- automatic voice reduction function, it starts recording when sound is detected or turn to standby state, saving recording time and reduce power consumption.MP3 Player Function- this voice recorder can be used as an MP3/music player, you could enjoy the music after your tired study, meeting and so on. Also can function as a detachable data storage device.you can take along your favorite pictures and documents whenever you go.Simply cut-and-paste or drag-and -drop files to or from it via USB connection, the player will appear as a removeable drive in Windows.High quality and long time uses DSP noise reduction technology to filter out environmental noise, has high-quality recording, 1536kbpsto restore the real scene. It can continuously record for more than 30 hours and play for 7 hours.