3D Massage Technology: Experience the most human-like massage with the Osaki OS-3D Pro Dreamer. The new enhanced 3D massage rollers are designed to massage wider with and deeper than the conventional massage rollers. The 3D technology allows you to extend out or protrude the massage heads up to 8 mm for a super deep massage. The Osaki zero-gravity massage chair has 5 different levels, ranging from normal to very strong. With the 3D technology, reaching and massaging the acupuncture points becomes effortless with better precision and depth, leaving you revitalized.