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 quality. The upgraded Hi-Fi audio source decoding chip restores the original sound for an ultra-clear recording without the need for headphones. The built-in high-quality stereo Hi-Fi speakers provide exceptional sound quality.Voice Activated Recorder Turn on the voice activated function, this audio recorder can set voice decibels at 7 different levels, Regardless the level of the volume, with correct voice decibel level, recorder will catch the speaking words only. No more silent whispers or snippets in your recordings, effectively saving the memory space and your listening time.Power-on Password Protection6-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 PROPERTYMP3 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.64GB Large Memory Storage Capacity & Long-lasting Battery LifeIntroducing the 2024 upgraded smart digital voice recorder with an impressive 64GB storage capacity and long-lasting battery life. it is perfect for a variety of recording needs. The rechargeable battery provides up to 30 hours of continuous recording, making it ideal for lectures, meetings, interviews, speeches, class, business, and study.