The feature I love most about this swing is that it operates on power. My other battery operated bouncer eats through batteries which is annoying and expensive. With this swing, you just plug it in and baby can swing as long as she wants. You also have the option of using batteries, but I never have.
The box says it has 10 different song, but it really is just one music setting with a string of music playing over and over again. So you have no option to select a song that your baby loves. For the price I paid (over $200) I expected more features, or at least the ability to select a song, or certain type of songs (e.g. a setting for playing or sleeping).
Another minus is, while there are multiple settings for speed of swing, I could see almost no difference between the lowest or highest setting. The speed & height of swing is a bit too high for my liking, when my baby first started using it, I felt she may tip forward. For my baby, I would have loved a low & soothing swing setting, which isn't possible, even on the lowest setting.
Hope this helps! :)