5 unique motions & speeds Bluetooth Enabled – control motion & sound 4 built-in sounds & MP3 plug-in. Maximum age: 6 months Soft, velvety, blanket-like material Machine washable seat fabric AC Adaptor – no batteries required Adjustable seat recline Weight Range: Birth to 25lbs (or when baby can sit up unassisted) The power supply for the mamaRoo will work between 100 and 240 VAC (or between 50 and 60 Hz.) From the makers of the mamaRoo; The power supply for the mamaRoo will work between 100 and 240 VAC (or between 50 and 60 Hz.)