4GB internal flash memory for up to 4,175 hours of recording time</br>Automatic record level with noise cut function</br>Digital Pitch Control function</br>Easy search function</br>Add/overwrite function</br></br>Product Description</br></br>This Sony ICDBX140 digital voice recorder features 4GB of internal flash memory, so you can easily store up to 4,175 hours of audio. A Noise Cut function and Low Cut filter promote crisp, clear results with minimal background noise.</br><br/>http://www.amazon.com/gp/product/B00IZEJFF4