I was hesitant about spending this kind of money on what essentially is a night light, but now that it's here I can say it was worth every penny! The quality is fantastic for the light, it casts the waves over our entire room without fading or "blurring" the farther areas. It helps to put our daughter (and us!) to sleep in just a few minutes when before she would roll around in her crib restless. I do wish that we could play the music or ocean noises on it's own as during the day we use the sound to soothe her into her naps but don't need the light play. But, it automatically shuts off after approx. 20 minutes or so, so it isn't exactly affecting the battery life to run the wave lights when it's daylight. I like that it doesn't run for a long period of time because this helps to get the most out of the battery life, and she's usually fallen asleep within less than 10 minutes anyways and would serve no purpose to run for hours. Love it!!