Excellent sound and light machine. I had many others, mostly battery operated, but this one is the best. There is no need to worry about battery replacements because it plugs in, the sound is nice, has multiple melodies and sounds options. The best of all: each function can be turned on or off separately so that you can have sound with no light, light with no sound, timer operated or continuous, you can dim the night light or make it bright, you can have the ceiling projection on or off, etc. By far the most functional and intelligent night light/sound soother on the market and well worth the price. I ended up buying two because the older kid was so impressed by his younger brother's owl that he had to have it too!!!