The OS-4D Pro Maestro LE has been upgraded to a smoother more realistic 4D massage than its predecessor. Experience the most life like massage from Osaki. With the Osaki OS-4D Pro Maestro LE massage chair you will have complete control of your relaxation experience. Massages are adjustable with 8 4D Depth adjustments 5 Strength adjustments5 Intensity adjustments and 5 speed adjustments for the massage rollers. - Product Details provided by Manufacturer, Slumberland not responsible for errors in information.