HD Sound QualityAdopts digital intelligent noise cancellation technology which captures 1536Kbps premium quality sound max. Equipped with omnidirectional stereo microphone, capture clearer sound in complex sound conditions. Dictaphone can reproduce the original sound perfectly which is important for meetings, lectures, interviews and music performance. DSP Digital Noise Reduction & Hi-Fi Recording QualityFeaturing the latest DSP digital noise reduction technology and high-sensitivity large caliber condenser microphone, our voice recorder with playback delivers hi-fi recording qual Power-on Password Protection4-digit password, Without your password,no one could turn on the device and overheard your recorded files. KEEP YOU IDEA IN A SAFE PLACE,PROTECT YOUR INTELLECTUAL PROPERTY 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. Large color screen and Easy Management of Recording Files A 1.44-inch large color screen, suitable for various age groups. Easy Management of Recording Files: All files are named by Year, Month, Day, Hour, Seconds, easy to find the file you just recorded Tape recorders with playback easy to use, you play or delete the records on the recording device Plug USB cable to PC, then you can upload or download the files while charging