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.
I have used an entire 8 pack of triple A batteries in the past 4 weeks. After recording lectures and playing them back while studying, I always have to replace the old batteries with new ones. Im using Duracell batteries, not any cheap off brand batteries. This recorder drains them.