Osaki OS-Pro 4D+4D DuoMax SE Massage Chair
Manufacture Warranty: 5 Year
(3 Years Full Service & Additional 2 Years Parts)
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You do not need to know the brands, features, or technical terms. We start by talking with you about why you are considering a massage chair and which areas you would like it to focus on. From there, our team can guide you toward chairs with the massage style, fit, and features that best match what you are looking for. We can also discuss delivery and "White Glove" set up options.
The Osaki OS-Pro 4D+4D DuoMax SE Massage Chair is a premium dual-mechanism chair built for people who want simultaneous upper- and lower-body roller work instead of waiting for one massage mechanism to travel from one area to another. Two independent 4D mechanisms create an eight-roller track massage, while the SL Flex Track, calf rollers, foot rollers, heat, and 38 air cells extend the massage beyond the back.
The hardware backs up the flagship positioning: dual 4D+4D mechanisms, 20 automatic programs, 11 massage styles, intelligent health detection, zero-gravity reclining, a 7.8-inch automatic footrest extension, and a 330 lb maximum user weight. Osaki includes a 5-year warranty consisting of 3 years of full service plus 2 additional years of parts coverage.
Why the 4D+4D Duo Mechanism Matters
The defining feature of the DuoMax SE is its Duo Mech 4D+4D massage system. Instead of a single roller carriage covering the entire back one section at a time, the chair uses two 4D mechanisms that can work different areas at the same time. The rollers adjust massage depth and speed to create a more targeted, human-like massage rhythm across the upper and lower body.
SL Flex Track for Coverage and Stretching
The DuoMax SE uses an SL Flex Track designed to follow the spine while also changing its angle with the backrest. That flexibility allows the roller system to maintain coverage from the neck and shoulders through the lower back and toward the hamstrings while giving the chair more freedom to open the body during recline and stretching programs.
Intelligent Health Detection
Osaki's integrated health-detection system tracks readings including heart rate, blood oxygen level, microcirculation, and fatigue index. The chair uses that information as part of its personalized massage experience. These readings are wellness features of the massage chair and should not be treated as a substitute for medical evaluation or diagnostic equipment.
Lower-Body Massage Goes Beyond Air Compression
The DuoMax SE gives the calves and feet dedicated mechanical massage rather than relying only on airbags. Vertical calf rollers move through the lower legs while air compression adds surrounding pressure. Under the feet, two specialized rollers per foot use reflexology-style ridges to work from heel to toe.
The automatic footrest can extend up to 7.8 inches to accommodate different leg lengths.
Piano-Key Arm Massage and 38 Air Cells
Air compression covers the shoulders, arms, hips, calves, and feet through 38 air cells. The arm section also uses Osaki's piano-key massage design to create more active compression through the hands and forearms than a basic squeeze-and-release arm airbag system.
Two Heating Cores Plus Lower-Back Heat
Two heated jade cores move with the massage system to combine roller pressure with targeted warmth. The chair also provides lower-back heat, with Osaki listing the heating-pad range at approximately 75–83°F.
Zero Gravity Without Requiring a Large Wall Gap
Zero-gravity reclining redistributes body pressure while the massage mechanisms work. Osaki's space-saving design requires approximately 5.5 inches of wall clearance for a full recline, helping a large premium chair fit more efficiently into the room.
20 Automatic Programs and 11 Massage Styles
The DuoMax SE includes 20 automatic massage programs for different routines and focus areas, plus 11 massage styles for more manual control. Programs include options centered on relaxation, waist care, stress release, energy, full-body air massage, legs and feet, and other targeted routines.
Control It from the Chair or Your Phone
Control options include the chair's touchscreen controller, quick-access side controls, smart voice control, and the Osaki DuoMax mobile app for iPhone and Android. Convenience features also include wireless phone charging, USB charging, ambient LED lighting, and HD Bluetooth surround speakers.
Dimensions and Fit
- Upright: 31.5" W × 66" L × 51" H
- Reclined: 31.5" W × 76" L × 41" H
- Chair Weight: 354 lb
- Maximum User Weight: 330 lb
- Shoulder Width: 19"
- Seat Width: 20.5"
- Minimum Door Width: 30"
- Wall Clearance: Approximately 5.5"
- Power: 110–120V, 50/60Hz
Available Colors
Choose Midnight Black, Stormy Grey, or Taupe.
Osaki 5-Year Warranty
The DuoMax SE is sold with Osaki's official 5-year warranty: 3 years of full service followed by 2 additional years of parts coverage.
Compare more Osaki massage chairs or browse our full massage chair collection.
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