The FisherPrice Aquarium Cradle Swing is an excellant product. My mother-in-law had purchased the first aquarium swing at a yard sale. It was a well-used, well-maintained product, going through three other babies. My son was a premie and this swing "fit" him at 5 pounds. When the mobile stopped working, I bought my son a different swing - which he hated. I searched the internet for weeks to find him a new aquarium swing! The gentle swaying motion was "side to side" or could be swiveled for "front to back." There are six swinging speeds. The swing features a motorized mobile of brightly colored fish, swirling lights, and music which could be activated independantly. The seat cover is removable and washable. There is a removeable tray with toys which provide lots of opportunity for entertainment. The swing is battery operated which allows it to be used outdoors as well as indoors.