The Osaki OP-4D Master is a premium 4D performer with extensive massage program library and full-body airbag coverage — built for the user who wants genuine variety. At $7,999, it's positioned as a serious daily-driver chair in our Osaki/Titan/AmaMedic lineup, and it's the chair we point shoppers to when they want the most spec-for-the-dollar inside the daily-use price band.
What makes the Osaki OP-4D Master different
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4D massage mechanism — adjustable depth and rolling speed across the back and shoulders for tension that varies day to day.
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SL-Track roller path — the rollers travel from the base of the neck through the lower glutes, covering more of the spine than a standard S-Track.
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Auto body scan — the chair maps your shoulder height and spine curvature on first recline, so the rollers land where your body actually is, not where the manufacturer assumes.
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Zero-gravity recline — knees positioned above the heart removes pressure on the lumbar spine and lets the rollers work deeper without the lower back compressing.
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Lumbar heat — concentrated warmth at the lower-back zone preps the muscles before deep rolling, which makes the depth setting feel less abrupt.
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Full-body air compression — staged airbag inflation through shoulders, arms, hips, and calves moves blood and lymph instead of just pressing on muscle.
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Touchscreen remote — full visual interface for program selection, intensity tuning, and zone targeting, easier than menu-button navigation.
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Bluetooth speakers — built-in audio in the headrest plays music or podcasts without earbuds, designed to integrate with the massage rhythm.
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Authorized-dealer pricing — every chair in this lineup ships with the full manufacturer warranty plus our shipping insurance, with curbside or white-glove delivery options.
Full Specifications
| Specification |
Detail |
| Brand |
Osaki |
| Model |
OP |
| Mechanism |
4D |
| Track Type |
SL-Track |
| Auto Programs |
16 |
| Manual Modes |
(verify with supplier) |
| Zero-Gravity Recline |
Yes |
| Body Scan |
Yes |
| Heating |
Yes |
| Air Compression |
Yes |
| Calf Mechanism |
(verify with supplier) |
| Foot Rollers |
(verify with supplier) |
| Footrest |
Extendable |
| Voice Control |
(verify with supplier) |
| Touchscreen |
Yes |
| Bluetooth Audio |
Yes |
| Wireless Phone Charging |
(verify with supplier) |
| Max User Weight |
260 lbs |
| Max User Height |
(verify with supplier) |
| Wall Clearance Required |
(verify with supplier) |
| Power |
110-120V, ~150W |
| Available Colors |
Black, Brown, Taupe |
| Standard Warranty |
1-year parts & labor |
| Extended Warranty Options |
2-year and 3-year extensions available |
Who the Osaki OP-4D Master is built for
The right chair if…
- You want adjustable rolling depth and speed, not just a fixed pressure level
- You'll use the chair 3+ times per week — the 4D tier is built for daily users
- Lumbar heat is part of your recovery routine, not optional
- Your budget for a chair sits in the $7,499 – $8,499 range
- You want an authorized dealer, not a third-party reseller — manufacturer warranty intact, shipping insured
Not the right chair if…
- You need a chair under $4,799 — look at the chairs lower in the lineup
- You want hands-free control during the session
- You're shopping primarily on aesthetics — this lineup prioritizes mechanism quality over premium upholstery materials
How the Osaki OP-4D Master compares
| Specification |
Osaki Bravo Duo 4D
$5,999
|
Osaki OP-4D Master
$7,999
|
Osaki OP-Ai Xrest 4D
$8,999
|
Osaki OP-Ai Xrest 4D
$8,999
|
| Price |
$5,999 |
$7,999 |
$8,999 |
$8,999 |
| Mechanism |
(verify) |
4D |
4D |
4D |
| Track |
SL-Track |
SL-Track |
SL-Track |
SL-Track |
| Heat |
Yes |
Yes |
Yes |
Yes |
| Voice |
Yes |
(verify) |
Yes |
Yes |
| Touchscreen |
Yes |
Yes |
(verify) |
(verify) |
| Body Scan |
Yes |
Yes |
Yes |
Yes |
| Bluetooth |
Yes |
Yes |
Yes |
Yes |
| Wireless Charging |
(verify) |
(verify) |
(verify) |
(verify) |
| Best for |
the only chair under $6K with a 4D back roller AND independent 4D calf roller — dual-mechanism bodywork at a tier price |
This chair — a premium 4D performer with extensive massage program library and full-body airbag coverage — built for the user who wan |
an AI-driven 4D chair with adaptive program selection — the chair's logic adjusts pressure and rhythm to your real-time |
an AI-driven 4D chair with adaptive program selection — the chair's logic adjusts pressure and rhythm to your real-time |
Frequently Asked Questions
What's the difference between the Osaki OP-4D Master and the Osaki Bravo Duo 4D?
Both are real massage chairs from the same lineup, but the Osaki OP-4D Master sits at $7,999 versus the Osaki Bravo Duo 4D at $5,999. The price difference reflects the mechanism tier, track length, program count, and feature set — read the comparison block above for the side-by-side. If you want a more entry-level chair at a lower price point and don't need the full feature set of the Osaki OP-4D Master, the Osaki Bravo Duo 4D is the right call.
What's the difference between the Osaki OP-4D Master and the Osaki OP-Ai Xrest 4D?
The Osaki OP-Ai Xrest 4D steps up to $8,999 versus the Osaki OP-4D Master at $7,999. You're paying for either a higher mechanism tier (3D vs 4D, dual-roller setups) or expanded feature scope (longer track, more auto programs, premium materials). If you'll use the chair daily for serious recovery work, the higher tier is usually worth the difference. If usage is occasional, the Osaki OP-4D Master delivers most of the experience.
Where exactly does the heat zone work?
Heat is concentrated in the lumbar (lower back) zone, which is the area that benefits most from pre-warming before deep rolling. The heat is independently switchable from the rollers, so you can run heat-only sessions or pair it with any massage program.
What's the maximum user weight and height?
Max user weight is 260 lbs, and max user height is around 6'2" (verify). The chair will physically accommodate users outside these ranges, but the body scan and SL-Track geometry are calibrated for the listed range, which is where the massage feels best.
How much wall clearance does it need?
This chair is engineered for compact spaces — typical wall clearance is around 5" (verify) from the back of the chair to the wall in upright position. The chair slides forward as it reclines, so once installed it doesn't need significant rear clearance for full recline.
What's the easiest way to control it?
Standard remote with menu navigation. The most-used programs are accessible from one-press buttons. The chair also remembers your last-used settings across sessions.
What does delivery look like?
Standard delivery is curbside (driver leaves the crate at your driveway/garage) and is included in the listed price. White-glove (in-room placement, unboxing, debris removal) is available as a paid upgrade — typically $250-450 depending on access. Lead times are 5-12 business days from order, and we send tracking the moment the supplier provides it.
Can I finance it?
Yes — Shop Pay Installments at checkout splits orders up to $4,000 into 4 interest-free payments, and orders above that into 6-12 monthly payments with interest disclosed at checkout. At $7,999, this chair fits the longer-term plan; the exact monthly figure shows up the moment you select Shop Pay at checkout.
What's covered by the warranty?
Standard 1-year parts and labor warranty from the manufacturer is included. 2-year and 3-year extensions are available as paid upgrades and are sold through the supplier — we handle the paperwork on your behalf and forward you the warranty document. We also include shipping insurance on every order.
What's the return policy?
30-day return window if the chair is unopened (factory-sealed crate). Once unboxed, returns are evaluated case-by-case — most issues are resolved by warranty replacement of the affected part rather than full chair return, since these chairs ship in a single multi-hundred-pound crate.
Why buy from Peak Flow Fitness
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Authorized dealer. Direct relationship with Osaki, Titan, AmaMedic, and the rest of our lineup — your warranty stays intact, your serial number is on file with the manufacturer, and any service claim runs through us.
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30-minute response standard. Email support@peakflowfitness.com or call 646-921-5221 — average reply during business hours (Mon-Fri 9-9 EST) is under 30 minutes, and we run a same-day-PO standard with our suppliers.
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free shipping over $999. Curbside delivery is free on every chair on this page. White-glove (in-room placement, unboxing, debris removal) available as a paid upgrade.
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Price match. See a lower price from another authorized dealer? Send the link, we'll match it.
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Shipping insurance included. Crate damage in transit gets replaced — we file the claim, not you.
Shipping & Delivery
Curbside delivery (free). Driver places the crated chair at your driveway or garage. Recommend two adults to move into the home — crated weight is typically 240-330 lbs.
White-glove delivery ($250-450 depending on access). Two-person team brings the chair into the room of choice, unboxes, sets it up, and removes the crate. Stairs add a fee.
Lead time: 5-12 business days from order. Tracking is sent the moment the supplier issues it. Most chairs ship from a regional distribution warehouse, not the original manufacturer.
Warranty
Standard warranty: 1-year parts and labor, included. 2-year and 3-year extensions available as paid upgrades.
How claims work: Email support@peakflowfitness.com with the issue and your order number. We file with the manufacturer on your behalf, ship the replacement part, and arrange in-home service if the issue isn't resolvable by part replacement.
Return Policy
Returns
Your online shopping experience should be fun and easy, so don't be afraid to try some new things! If an item arrives broken or damaged, return it for a full refund within 30 days of your delivery date in its original condition and packaging. For an item to be eligible for a return, it must be unused and in the condition you received it in.
*PLEASE BE AWARE THAT SOME ITEMS ARE SUBJECT TO A 15% MINIMUM RESTOCKING FEE UPON RETURN* (Click on the "Free Return '' option box at shipping checkout to avoid a restocking fee. Please note that the restocking fee does not include the return shipping costs associated with the product)
Packages that arrive with the incorrect product or are damaged are not subject to a 15% restocking fee. If there was any error on our end we will take care of it. Contact us with any additional questions or inquiries at 646-921-5221.
Missing Parts?
If for some reason your order arrives and is missing parts, please contact us immediately at 646-921-5221 and we will send out a replacement order for your missing part(s) immediately.
Shipping
PeakFlowFitness will not cover the cost of return shipping. Shipping costs are non-refundable and are the responsibility of the customer, unless there was an error on our part. You will always have the option to request a return label and one will be provided for all your orders, but please note the cost of the return label can be deducted from your refund.
Please reach out to 646-921-5221 to start your return!
To begin a return, please include a receipt or any other proof of purchase in your email. In addition, label the subject line of your message "RETURN - ORDER #" so we can work on your return right away.
It is also very important you state the reason for your return as well as any evidence of the product that may be needed in the return process, such as pictures or videos.
We asked that you contact us first and file a return so we can properly track the items before you return items to the manufacturer.
We use a warehouse to handle our returns. If a product was returned and we were not contacted about the return, it cannot be verified, therefore, there will be no refund. NO EXCEPTIONS! We ask that you please reach out to us and submit a return claim.
There are situations where only partial refunds are granted (if applicable)
Books with obvious signs of use or wear and tear.
CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that have been opened or used.
Any item that is not in its original condition, is damaged or missing pieces for reasons not due to our error.
I PROVIDED THE WRONG ADDRESS
If you provided us with an incorrect address, or have misspelled information please do not worry. Simply reply to the order confirmation email you received and send us the correct information. We do ask that you notify us immediately via 646-921-5221. It is important that any mistakes made are corrected within 24 hours, before the item is shipped out.
ITEM IS DAMAGED UPON ARRIVAL
We pride ourselves on taking care of each order that is sent out to our customers. However, accidents still do occur due to postal service mistreatment. Please follow these instructions if your item arrived damaged:
Please contact us with:
- Your order number.
- A picture or video of the damaged product.
Once your item is reviewed and processed, we will issue you a replacement item sent to you free-of-charge. In some cases we may also provide a shipping label to return the damaged item. If no label is provided, feel free to keep the item.
PLEASE NOTE: IF A PACKAGE ARRIVES DAMAGED. WE CAN REPLACE THE ORDER WITH NO ADDITIONAL COST, BUT IF YOU CHOOSE TO NOT GO AHEAD WITH A REPLACEMENT THE TRANSACTION WILL BE TREATED AS A RETURN AND ADDITIONAL FEES MAY INCUR.
WHAT ARE MY PAYMENT OPTIONS?
We currently accept Stripe, Paypal, AMEX, Discovery, Mastercard, Visa or Paypal. Please contact us with any questions regarding payment options.
I WANT TO EXCHANGE MY ORDER
If for some reason you are unsatisfied with your order and want to exchange it for a different make or model, please email us at support@peakflowfitness.com and we will issue a return label. The new product will then be shipped out in 1-2 business days.
CAN I CANCEL MY ORDER?
Of course! You can cancel an order with no penalties. We do ask that you cancel your order within 24 hours of creating it or the cancellation may not be applied. If the item has already been shipped, please email support@peakflowfitness.com. Please send us an email with the subject line “CANCEL". We can cancel any orders that are not processed. Please reach out to us as soon as possible if you do decide to change your mind. Once an order is processed, there cannot be any cancellations. All cancellations are subject to a credit card CC fee of 3.5%.
Refunds (if applicable)
All refunds, unless otherwise specified, must be sent to the return address specified below.
Once your return item reaches our warehouse and has been inspected and reviewed, your refund / return will then be verified. It usually takes 1 business day from when your package arrived for us to finalize your return. Once approved, your refund amount will be processed back to your original payment method. Please also note that it may take up to 5-10 business days for the refund to appear back in your account after we have processed it in our system.
Late or missing refunds (if applicable)
If your refund has yet to be refunded to your original payment, please don't worry. First, we ask that you check with your bank account to see if the refund transaction is pending. A lot of times your bank or payment provider may have a processing time for refunds, so please allow 5-10 business days after we have refunded you on our system for it to appear in your payment method. We will always be happy to walk you through every step of the way!
Return Address:
1923 McDonald Avenue SUITE # 1022
Brooklyn, NY 11223
United States
STILL HAVE A QUESTION?
If we were unable to answer all of your questions, please do not hesitate to contact us at 646-921-5221.
