The MamaRoo is nothing new, but this version, the 4Moms MamaRoo 4 ($250), has a few additional features, including 25 different motion patterns and speed combinations (which you can control via Bluetooth on your phone!). The seat now fully reclines; you can hook up music or sounds through a phone or iPod with an AUX cable; and the plush fabric is easy to remove and machine washable.