The JSB MZ20 Executive Office Recliner Chair with Back Kneading Massage and Seat Relaxing Vibration is an Electric Recliner Chair with side built-in control buttons and Handheld Remote Control for Massage Functions. It has got Detachable Back Cushion for a Stronger Massage Experience. So, if you like to have a deeper and stronger back massage, you can remove the cushion. You can customize the kneading massage function of this massage sofa by selecting Full Back, Lower Back or Upper Back Massage. Also, you can select between the three vibration intensities of seat. The recliner sofa with back massage comes with a 1 Year National Warranty by JSB Healthcare.