This sound machine make really relaxing music. and it helps me to fall a sleep. if you close your eyes and listen the sound you feel like you are in the beach and you enjoy the noise. it is so natural. and it has some option too so you can change it any time you can set the time too so you do not need to remember to turn it off or not need to worry about you sleep. overall good buy. [This review was collected as part of a promotion.]