Osaki Platinum Solis Duo 4D+ Review
By ChairMentor Editorial Team · Research and editorial standards
Last reviewed 2026-09-01
Specifications are sourced from manufacturer documentation and retailer listings, each with a citation and verification date. How we research.
- Price
- $11,999
- Best for
- The highest user weight limit in the Osaki line
- Roller / track
- 4D · SL track
Pros
- 330 lb user weight limit, the highest of any chair in our database
- Dual 4D mechanism on an SL flex track that reclines past flat
- Reclines to 81 inches, so the leg rest clears taller users
Cons
- Needs 10 inches of wall clearance, the most of any chair we cover
- 286 lb chair weight makes repositioning a two-person job
- The most expensive Osaki in our database at $11,999
ChairMentor may earn a commission when you purchase through links on our site. This does not affect our editorial evaluations. Read our affiliate disclosure.
Overview
Osaki's flagship dual-mechanism chair and the one to look at if weight capacity is the deciding factor. Research Review built from Osaki's official specification table.
Brand: Osaki. Typical street price: —.
Who This Chair Is Best For
Osaki Platinum Solis Duo 4D+ is positioned for buyers who prioritise the highest user weight limit in the osaki line.
Its stated user height accommodation is — and its stated maximum user weight is 330 lbs.
Who Should Skip It
Buyers outside the stated fit range, or with less than 10" of wall clearance available, should consider a different chair.
Anyone whose priority is a lower price will find more value in the mid-range guides linked below.
Massage Performance
Osaki Platinum Solis Duo 4D+ uses 4D rollers on a SL track. Based on manufacturer specifications, published documentation and verified owner feedback.
Roller System
Roller system: 4D. The number of movement axes determines how much depth and rhythm control the chair offers.
Massage Track
Track: SL track, quoted at 53". Track shape decides how far down the body the rollers reach.
Air Compression
Airbag count: 42, per manufacturer specifications.
Foot and Calf Massage
Foot rollers: Yes. Calf rollers: Yes.
Heat
Heat locations: Lumbar.
Zero Gravity
Zero gravity positions: 3. Each stage is a preset recline angle.
Stretch Programs
Stretch programs: Yes.
Body Scanning
Body scanning: Yes.
Controls and App
Voice control: Yes. Bluetooth: Yes. Manufacturer app: Yes.
User Height and Weight Fit
Recommended user height: —. Maximum user weight: 330 lbs.
Comfort When Not Massaging
We assess seat depth, headrest position and recline range against published dimensions. We do not claim seat-feel impressions without a testing record.
Build Quality
Chair weight: 286 lbs, which is one of the few published proxies for frame construction. Based on manufacturer specifications, published documentation and verified owner feedback.
Noise
No verified decibel measurement is available for this chair. We publish noise figures only when measured.
Space Requirements
Upright: 63.0" L x 30.0" W x 48.4" H. Reclined: 81.0" L x 30.0" W x 37.4" H. Required wall clearance: 10".
Assembly and Delivery
White glove delivery availability: Yes. Confirm what the seller includes.
Warranty
5-year limited (3 years full service plus 2 additional years parts). Coverage tiers commonly differ between parts, labor and structure, and can vary by retailer.
Price and Value
Current retailer pricing in our database: $11,999 (last checked 2026-09-01).
Alternatives
Comparable chairs from our database are linked below.
Final Verdict
Osaki's flagship dual-mechanism chair and the one to look at if weight capacity is the deciding factor. Research Review built from Osaki's official specification table.
Full specifications
Specifications are stored once in our product database and rendered here, on comparisons, and in buying guides.
| Brand | Osaki |
|---|---|
| Model | Platinum Solis Duo 4D+ |
| MSRP | $11,999 |
| Typical street price | — |
| Roller type | 4D |
| Massage track | SL track |
| Track length | 53" |
| Airbags | 42 |
| Zero gravity positions | 3 |
| Heat locations | Lumbar |
| Foot rollers | Yes |
| Calf rollers | Yes |
| Body scanning | Yes |
| Stretch programs | Yes |
| Voice control | Yes |
| Bluetooth | Yes |
| App | Yes |
| Dimensions (upright) | 63.0" L x 30.0" W x 48.4" H |
| Dimensions (reclined) | 81.0" L x 30.0" W x 37.4" H |
| Required wall clearance | 10" |
| Chair weight | 286 lbs |
| Maximum user weight | 330 lbs |
| Recommended user height | — |
| Warranty | 5-year limited (3 years full service plus 2 additional years parts) |
| White glove delivery | Yes |
| Country of manufacture | Not verified |
| Price last checked | 2026-09-01 |
| Specifications last verified | 2026-09-01 |
Where these specifications come from
Each figure below was read off the page listed and dated when we checked it. Manufacturers revise specifications without notice — if a number here disagrees with the retailer at checkout, the retailer’s page governs.
[1] Osaki USA official product page — 4D dual mechanism — checked 2026-09-01
Roller system, Track type, Calf rollers, Heat locations, Max user weight (lbs), Dimensions upright, Dimensions reclined, Wall clearance (in), Chair weight (lbs), Warranty, White glove delivery
Related reading
Update log
This page is re-checked at least every six months, and sooner when a price, warranty term or specification changes.
- 2026-09-01Verified specifications against Osaki's official product page, corrected the model name to Platinum Solis Duo 4D+, and replaced the stand-in photo with Osaki's product image.