AC home adapter included.
In-put:12V;2A 4 rolling massage nodes
Cover:PU
4 rolling massaging nodes moving up and down on back with 3 modes-full back, upper back & lower back.
Computerized control.
Customized massage selection.
Cushion headrest for added support
Easy strapping design for attaching to most seats & chairs. 2 vibration motors in seat provide 3 intensities of soothing massage