The digital voice recorder with playback is equipped with very sensetive microphone and upgraded chips to record stereo voice, supporting 1536 kbps recording. with DSP noise reduction technology to filter environmental noise, you can get stable clear sound as if the speaker talk to you face to face. It can have up to 30 hours super long continuous recording time with full battery, store 24-576 hours of recording files. It is a great voice recording device to save your phone's power by fulfilling all your recording needs. make sure the user use it willingly.This mini audio recorder is suitable for class, lectures, speeches,interviews and so on. Premium quality recorder with excellent sound: Adopt upgraded noise-canceling microphone with professional recording chip, capture 1536Kbps high-quality sound, recorder with playback function Powerful feature: Multi-usage as a voice recorder, an USB flash drive, and a Mp3. Many other helpful features like A-B repeat, automatic shutdown, and timed recording, etc. It will automatically save the current recording when battery runs out Super capacity in battery and memory: 16GB built-in flash memory can record files for 24-576 hours (depending on the resolution), fully charged can work continuously for 30 hours Wide use voice activated recorder: High-sensitivity digital microphones on our recorders ensure speech is captured, reducing blanks and whispers, so great device for professor,student,doctor,interviewer and so on Professional flash memory, fast transfer: With its USB connection and charging capabilities, you can easily transfer recordings to your computer and charge the recorder when needed