Clear PCM recording: adopts dual upgraded noise reduction microphones and professional recording chip. Capture 1536Kbps premium sound. Audio recorder with playback function, carefully designed for easy user access. 64GB Digital Voice Recorder: Can store 800 hours of recordings or 30,000 songs, and can record for up to 22 hours when fully charged. Recordings can be preset to mp3 128kbps, 192kbps or wav 1536kbps format. Voice Activated Voice Recorder: This mini voice recorder device can set voice decibels to 5 different levels. No matter the volume, at the correct speech decibel level, this recorder will capture only spoken sounds, reducing blanks and whispered segments. Powerful functions: Can be used as a voice recorder, USB flash drive and MP3. Many other useful features like password protection, AB repeat, auto-recording, bookmarks, smart battery detection.