Very cool. Easy to figure out. I was pleasantly surprised at how calming the waves were! There’s an app that connects to Wi-Fi mode on the projector light so you have the ability to adjust it from the phone or the remote control that comes with it. Also, has a pretty decent speaker so you can pair it with the blue tooth and listen to your fav tunes. I like to put on the sleep music at night and turn on the projector….. Works like a charm. In minutes, I’m sleeping like a baby!!!