I bought this for my daughter who's taking Organic Chemistry from a professor whose lectures ramble all over the place. She records his lectures then listens to it again where she can rewind, take detailed notes, and really sort it out. She LOVES it and so do her classmates who have asked that she send them the digital audio file as well. She can save it on her computer, burn it to a CD, listen to it in her car. Perfect for learning a tough subject! The device works great, picks up the audio wonderfully and is small enough to not be intrusive. I am VERY pleased with this purchase!