This machine can be a life-saver--if, like me, you happen to be sensitive to external sounds, AND if such sounds either impinge on your ability to work OR if they simply make you mad as hell! I fit into both categories. I bought 3 of these machines about 10 years ago--Marsona was the manufacturer. this is the same device. and it is just as fantastic. True tale: I have had one of my 3 Marsonas in the on position, playing white-noise waves, for 10 years. I mean without interruption! I gave 2 of the units away to a friend in need....but now I need another unit for another room of my NYC apartment, where noise from outside is making me crazy. This is the original device--it works just like the old one. I cannot more highly recommend it for those in need!!
Rating: [5 of 5 Stars!]