Definitely a white noise machine. We bought ours second hand, but I would have paid double retail, It is awesome and my go-to baby gift: http://www.amazon.com/Tranquil-Moments-White-Noise-Machine/dp/B000CMFM6S/ref=sr_1_4?ie=UTF8&qid=1354917241&sr=8-4&keywords=brookstone+sleep+machine