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The OS-4000 massage chair features beautifully updated upholstery and includes Zero Gravity, a 30 inch Roller Stroke, Body Scan Technology, S-Track Massage Robot, full body air massage, seat vibration, and heat therapy for your back.
Equipped with the latest technology, it allows for the rollers to map the back curvature with even more accuracy, which translates into a more precise massage hitting all the key areas. Regardless of your body type, this highly advanced chair will self-adjust making each massage experience feel customized.
The OS-4000 Zero Gravity massage chair is ergonomically designed to contour a variety of spine shapes. The Spine curvature is unique from one individual to the next. The S-track system allows the roller heads to massage along the back from the neck down to the lower spine with a consistent pressure in the massage, along with a comfortable support. The typical massage tracks, being linear, create an inconsistency in pressure applying weak massages in the neck and lower back.
Inspired by NASA technology, the Zero gravity position is the perfect position to enjoy a massage, aligning your back relative to your thigh at an optimal level of comfort. When reclined into the zero gravity position, the complete weight of your back is virtually supported by the backrest which maximizes the intensity of the massage. This also reduces the vertical stress on the spine. There are 2 stages of zero gravity, the 2nd being more reclined. Study show that when the legs are at or above heart level, it promotes better circulation.
How will this chair fit me?
The outer shoulder massagers measure 20 inches side to side. This translates to a 46” jacket size for men or 22 inches in shoulder width. Anyone who’s shoulders are wider that 22 inches will find this chair snug in the shoulder region and be recommended to select the Osaki OS-3D Pro Cyber that provides an additional 1.5 more inches in width.
The seat base has a total width of 17 inches which translates to about a 40 inch waist capacity.
This chair will fit some comfortably up to 6’3”.
The results may vary as each individual’s body types are different.
Total space required from front to back when reclined is 6 feet. The width is 3 feet from side to side.
The massage chair massage intensity has been measure at 7-8 in regard to back massage intensity.
Warranty: The chair comes with a 1 year plus 2 year additional parts factory warranty.