The OS-4000 is designed with six unique auto-programs: Healthcare, Relax, Therapy, Smart, Circulation and Demo. The automatic massage program for the upper body encompasses your shoulders, your neck, your back, and your lumbar area. Programs for your lower body includes: buttocks, thighs, calves and feet. Manual massage for the upper body comes with three options, full body, partial and fixed; that has six massage styles - rolling, kneading, clapping, shiatsu, Swedish and combo. Manual massage also has five levels of speed and intensity with three kinds of width adjustable settings: wide, medium and narrow air pressure massage for back (two airbags), and also includes five intensity options. Air pressure for lower body (twenty-six airbags), with five intensity options powerful vibration massage for buttocks, calf rests that can be lifted and stretched, backrest can also be lifted. LCD display comes with auto timer 5-30 minutes and a wireless mini-controller.

The Osaki OS-4000 massage chair has all the features that the Osaki OS-3000 massage chair has plus heat therapy for your back, vibration massage in the seat, air and vibration massage for the arms, air massage for the hips, neck, and shoulders. The OS-4000 features a zero gravity design that utilizes a set of S-shaped tracks with movable intelligent massage robots. This allows the chair to self-adjust to the contours of your back with special focus on your neck, shoulders, and lumbar area, then the chair massages according to your personal body curves. This allows the chair to give you a more realistic and soothing massage such as you would receive from a masseuse.

Zero Gravity Design		Truly Ergonomic S-Trac		Human Hand like Massage
Most ergonomically correct reclining position, taking virtually all the burden of gravity off your spine. It cradles you like a baby and leaves you feeling weightless and deeply relaxed. Helps relieve back pressure with the zero gravity design Helps reduce sore muscle tension Helps correct spinal alignment Helps reduce chronic pain condition such as sciatica or a painful mid back, Arthritis, Fibromyalgia and more. Helps decrease stress on the heart		Ogawa SmartAire ergonomically designed with the shape and curvature of the human spine in mind. It provides support to both your neck and back, especially the lumbar area. This position increases the effects of the massage.		Uses twin rollers to mimic the feel of the human thumb, thereby enhancing the massage experience. The width of the rollers can be adjusted and customized.