Clear PCM Recording: Adopts upgraded noise cancelling microphone with professional recording chip. Capture 1536Kbps premium quality sound. Voice recorder with playback function, which is well designed for the users to easily access.  64GB Digital Recorder, Computers Compatible: stores 4600 hours of recording, or 20,000songs, up to 25 hours of continuous recording with full battery. Recording can be pre-set into mp3 128kbps,192kbps, or wav 1536kbps format. A wonderful voice recording device for lectures, meetings, and conversations. Voice Activated Recorder: This recorder device can set voice decibels at 6 different levels. Regardless the level of the volume, with correct voice decibel level, this recorder will catch talking voice only, reduce blank and whispering snippet. Powerful Feature: Multi-usage as a voice recorder, an USB flash drive, and a Mp3 Player. Newly developed 4-folder storageA/B/C/D for file management make your recording and other files more organized. Many other helpful features like password protection, A-B repeat, auto record, bookmark, ideal recorder for lectures, meetings, speeches, and interviews. Fast File Download: V618 can easily transfer files onto computers. A rechargeable voice recorder that can be quickly recharged, suit for students, teachers, seniors, businesspeople, writers, and bloggers