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Osaki OS-4000T Massage Chair

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Osaki OS-4000T Video
Osaki OS-4000T Specifications
Osaki OS-4000T Warranty
Osaki OS-4000T Customer Reviews
Osaki OS-4000T Manual
Osaki OS-4000T Reviews

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Osaki OS-4000T Massage Chair

The Osaki OS-4000T Massage Chair is the newest update to the best selling OS-4000 and now includes Foot Rollers! The OS-4000T also 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.

Customizing your massage is easy with the Osaki OS-4000T's 5 unique auto programs: Healthcare, Circulation, Relax, Smart, and Demo, all with one touch of a button. Massage combinations are endless with 6 of the most desirable techniques: Shiatsu, Swedish, Kneading, Clapping, Rolling, and Combo. Add to that 5 speed and intensity settings and you have complete control of your massage for ultimate relaxation.

Osaki OS-4000T Massage Chair

Osaki OS-4000T Special Features

Osaki OS-4000T Foot Rollers

New - Foot Rollers

The Osaki OS-4000T massage chair provides soothing reflexology massage to the soles of your feet, targeting the acupressure points to relieve tension throughout the body. The spinning rollers knead away foot pain and discomfort while the airbags increase circulation. This is a great feature for those that often have tired and sore feet and this is a great way to rejuvenate them.

Osaki OS-4000T Zero Gravity

Zero Gravity Technology

The zero gravity features on the Osaki OS-4000T is notable because it is so effective and touts many benefits. Simply put the chair reclines and lifts your legs until you are in a position of complete weightlessness. As you can imagine, your body is completely relaxed and in this position you gain numerous health benefits such as pressure relief from the spine, relaxation of the neck and back, less pressure on the heart, increased circulation and blood oxygen levels, and expanded lung capacity.

Osaki OS-4000T Air Massage

Next Generation Air Massage

The Osaki OS-4000T massage chair has 38 re-engineered with the next generation of air massage technology. Through innovative engineering, Osaki gas reduced the total number of air bags but have increased the volume and surface area of massage. This ultimately puts less stress on the chair, making it one of the most mechanically sound massage chairs in the market.

Osaki OS-4000T S-Track

Truly Ergonomic S-Track

The Osaki OS-4000T Zero Gravity Massage Chair is ergonomically designed to follow the natural S-curve of the human spine. It provides support to both your neck and back, especially the lumbar area. This position increases the effects of massage as it enables each disc of our spine to individually separate and decompress, allowing nutrients to enter disc tissues.

Osaki OS-4000T Features

Osaki OS-4000T Body Scan Technology

Body Scan Technology

At the touch of a button the Osaki OS-4000T will scan your body and not only automatically adjust the rollers for the perfect massage but also automatically adjust the height and width of the chair to fit your body. Coupled with the S-Track massage robot, this Osaki OS-4000T is capable of specially focusing on problem areas of the body like the neck, shoulder, and lumbar regions customizing and enhancing the massage experience.

Osaki OS-4000T Massage

Comprehensive Human Hand-Like Massage

The Osaki OS-4000T is equipped with extra soft quad style rollers to mimic the feel of the human thumb, thereby enhancing the massage experience. The width of the rollers can be adjusted to medium or narrow mode to suit individual needs for better penetrating effects. The rolling manipulation helps dredge the main meridians on the back, acanthus, forehead and the top of the head, along which the acupuncture points are distributed, to clear the collateral channels.

Osaki OS-4000T Arm Massage

Arm Air Massage

Along with mechanical advancement, the material has also made upgrades, such as the arm massaging area. Using a durable spandex, the bottom portion of the arm massager has been lined with small rubber bumps to invigorate the senses as the 4 air bags compress the tops and bottom of the forearm and hands.

Osaki OS-4000T Calf and Foot Massage

Calf & Foot Massage

There are 14 air bags along the sides and back of the legs and feet which inflate to apply a compression massage. Located along the bottom foot massager are spinning rollers that apply a concentrated pin-point kneading massage.

Osaki OS-4000T Shoulder Massage

Shoulder, Lumbar, and Hip Squeeze

In the upper to mid portion of the chair, the 13 air bags are programmed to inflate at independent times, which causes the body to twist, creating an enjoyable deep stretch. Stretching is applied to the shoulders, lower back, hips and thighs.

Osaki OS-4000T Woreless Controller

Wireless Controller

Located on the back of the main remote you will find a compact wireless remote allowing you to control the main features of the chair without having to struggle to reach the main remote in the reclined position.

Osaki OS-4000T Lumbar Heat

Lower Back Heat Therapy

Placed in the lower back region of the chair are 2 heating pads that enhance the massage experience.

Osaki OS-4000T Automatic Programs

Automatic Programs

There are 5 automatic programs and 3 localized programs. The Automatic Programs are full body massage programs: Muscle Relief, Thai, Stretching, Ant-Stress, and Demo. The 3 localized programs only focus on certain regions: Neck and Shoulder, Back and Lumbar, and Full Air.

Osaki OS-4000T Manual Programs

Manual Programs

Manual Programs give you more flexibility to get the right massage to provide the relief you desire. Enjoy Tapping, Clapping, Shiatsu, Rolling, Swedish, and Kneading. You can also adjust the intensity and strength to get the right massage for you.

Osaki OS-4000T Additional Features

  • Timer function can be adjusted according to your desired duration of the massage program.
  • The Auto Leg Scan allows the calf and foot massager to adjust accordingly to your leg length ensuring that the airbags target the correct locations.
  • Located in the seat is a strong vibration system that provides a soothing and relaxing vibration massage that you can turn on and off during any massage cycle.
  • Spot and Partial massage that will allow you greater control of the massage roller to really work on those tight spots on your back.
  • Full Size Pedestal LCD Remote to give you complete control and access to your entire massage.

Product Video


Product Warranty

Osaki 3 Year "Rock Solid" Warranty

Osaki guarantees that your qualified product will be replaced or repaired, without cost to you, should it be deemed defective because of faulty parts, workmanship or structural defects during the first THREE(3) years of ownership, excluding specific limitations. Osaki Covers Parts, Labor, and Structural Framework for the 1st year of ownership, Parts and Structural Framework for the 2nd year, and the Structural Framework for the 3rd years.

You may obtain service advice by contacting the Osaki Customer Service department toll-free at 1-888-848-2630.

Download Warranty

Osaki 4 Year Extended Limited Warranty

The 4 Year Extended Limited Warranty adds an additional year of in-home service parts and labor, an addition year on parts, and an additional year of coverage on the framework to the standard Osaki Warranty. The first 2 years Osaki provides in-home service covering both parts and labor. The 3rd year Osaki covers Parts and Framework, and the 4th year just the Framework is covered.

Osaki 5 Year Extended Limited Warranty

The 5 Year Extended Limited Warranty adds an additional two years of in-home service parts and labor, an additional two years on parts, and an additional two years of coverage on the framework the standard Osaki Warranty. The first 3 years Osaki provides in-home service covering both parts and labor. The 4th year Osaki covers Parts and Framework, and the 5th year just the framework is covered.


Manufacturer Osaki
Country of Manufacture China
Roller Type 2D
Roller Length 30"
Roller Track Type S-Track
Roller Width Adjustment Yes
Roller Glute Massage No
Roller Speed Adjustment Yes
Roller Intensity Adjustment Yes
Removable Back Pad No
Body Scan Technology Yes
Foot Rollers Yes
Recline Automatic
Zero Gravity Yes
Inversion Therapy No
Auto Programs 5
Stretch Program Yes
Deep Tissue Massage No
Manual Programs Yes
Spot/Partial Massage Yes
Memory Setting No
Vibration Yes
Heat Lumbar
Total Airbags 38
Air Massage Arm, Calf, Foot, Hand, Head, Hip and Thigh, Upper Arm and Shoulder
Airbag Intensity Adjustments Yes
Airbag Speed Adjustments No
Ottoman Length Adjustment Automatic
Hideaway Ottoman No
Timer Setting 5 to 30 Minutes
MP3 Player No
Remote Type LCD Pedestal Remote, Mini Remote
Chromotherapy No
Upholstery Soft Synthetic Leather
Dimensions Upright (L" x W" x H") 46L x 32W x 47H
Dimensions Recline (L" x W" x H") 76L x 32W x 47H
Height Range 5'2" - 6'4"
Recommended Weight (lbs) 265lbs.
Massage Chair Weight 214lbs.
Warranty 3 Year Limited Warranty
Number of Motors 7
Big Box Size (L" x W" x H") 52.4L x 30.3W X 37.2H
Big Box Contents Base of Chair, Back Rest, Ottoman, Remote, Back Pad, Installation Hardware
Small Box Size (L" x W" x H") 37.8L x 25.6W x 15H
Small Box Contents Side Arm Panels
Shipping Weight 284lbs.

Customer Reviews (56)

overall the chair is "Great"Review by GP
1. On a scale of 1-5 how would you rate your chair? Why?
- Rating of 4 out of 5. I'm 5'7" and the chair fits me perfect, but my wife is only 5' so the foot rollers barely touch her feet and shoulder airbags are too high and cannot be adjusted. But overall the chair is "Great".

2. Was there a specific reason you bought a massage chair? (related to pain, injury, replace getting massages, wanted to start getting a massage, other)
We purchased the massage chair for working out sore muscles, stress relief and relaxation.

3. When do you usually use the chair?
We use it daily. Generally we use the chair in the evening after work to help relax after a long day and stressful commute.

4. What is your favorite feature, program, or function?
We love the "Muscle Relief" program the most along the flexibility to target specific areas.

5. Do you have any tips that may help future customers?
If possible, tryout different types of massage chairs to fit your budget & needs. We found the zero gravity massage chair was the most effective for us and fits our needs. staff was very helpful and service was outstanding.

6. How did you feel about our customer service? has a wonderful Customer Service department, they respond quickly and are always willing to help.
(Posted on 10/19/2015)
I cancelled 12 pre-paid massages with my massage lady after I received itReview by Cally
Thank you for asking for my input regarding my massage chair. The fact of the matter is I love it! I cancelled 12 pre-paid massages with my massage lady after I received it. I no longer feel a need to visit her office. The only thing the chair lacks that she provides is oil and soft music. Now, to answer your questions:

1. I would rate the unit a five out of five. It provides me with relief as promised.

2. The main reason I think I purchased the chair was to replace getting massages. Its so nice to have it at the ready whenever I am and not have to schedule appointments with someone then wait for them. Comfort is at the touch of a button.

3. I don't have any specific times that I use the chair, just whenever I feel like I would like to be pampered for a few minutes.

4. Actually, I don't have an actual favorite as I am still experimenting with all the functions. It would be most helpful though if you could include a more detailed manual describing when shipping the unit.

5. I placed the chair in an area that is not in the main flow of traffic or near a television. I have placed it in a quiet room that doesn't attract people who are seeking noise and/or company. I find that when it's quiet I can relax more and simply enjoy the chair. I have allowed some adults to try it and it isn't for everyone I find. I personally like the sensation of pressure it gives and then release. It's too intense for some who have tried it. (and that's fine with me, now they'll stay out of it)

The customer service I experienced was outstanding. Emery who I spoke with was very good. He needs an "atta boy"!
(Posted on 10/9/2015)
My husband and I each use the chair twice a day We have never felt better and more relaxed. Aches and pains melt away as we use the chair. One of the best investments we ever made. (Posted on 9/19/2015)
Tight in the shouldersReview by Tim B
Bought this chair for a friend and he ended up not wanting it. After a week of use we enjoyed the chair but found that it wasn’t very deep. I'm also 6 foot and the fit in the shoulder area was pretty tight and uncomfortable. I felt like I had to squeeze into it. We ending up decided to exchange it to the Osaki Pro Dreamer, because we felt we would regret it if we didn’t. The Dreamer chair is much deeper in the neck and shoulder area, and the fit is much nicer in the shoulders. I do recommend that if your over 6 feet or have broad shoulders to look at chairs with more shoulder room. is also everything that I read. Their staff is outstanding and they made the exchange process as easily as it could be. I would recommend calling them if you have any questions.
(Posted on 8/20/2015)
Great valueReview by Sammy P
We bought the Osaki 4000T in May and have been using it all the time. I originlly saw the chair at Costco but after talking to the Emassagechair staff they explained that the OS-4000T has foot roller and the OS-4000 does not. We liked the idea of the foot rollers, and they are awesome for tired feet. However, one thing we did notice after our friend used it was that if you are taller say 6' or higher you may find the chair a little tight. Other than that chair is great so far and it definitely helps with our aches and pains. (Posted on 8/9/2015)

(Posted on 5/21/2015)
Strong Massage Rollers!!Review by Sal
Great chair for the price. I would suggest this chair to anyone that is on a budget and wants all the newest features in a massage chair. (Posted on 10/10/2014)
Very nice chair. Review by Herb
Love this chair! So does the entire family! Installation a little tricky but we are glad we bought it! Zero gravity position puts me to sleep! (Posted on 10/3/2014)
Awesome chairReview by G.S.
This chair is heaven sent. It is even better than described online. Great deal and wonderful service from We couldn't be more satisfied or happy. (Posted on 8/13/2014)
Love this chairReview by Tired momma
I get have problems with my neck from standing in front of a computer all day at work. 20 minutes in the chair when I get home does wonders for me. Zero gravity, heated seat are terrific! Only disappointment is the head rest really doesn't do much except inflate. (Posted on 8/13/2014)
Oh how I love this chair. It is more than I was hoping for because there are so many different ways to use it! I have all my family rushing into the house to see who can use it first.

If I need deep muscle massage one day, I can get it. If I need just a soft air massage the next day, I can get that too.

I would recommend this to anyone who has a chronic pain disorder because it really helps the pain from my osteoarthritis and Fibromyalgia. It makes you forget the pain for a while, (Posted on 6/16/2014)
No More PainReview by Rick
My favorite feature on the chair is the ease if use & variety of massages. I decided to purchase this chair because of Back Pain. The chair has helped me be Pain Free. (Posted on 5/6/2014)
great chairReview by John
The chair is great to us and it relax's my whole body everyone that tries it thinks it is great (Posted on 5/4/2014)
TerrificReview by RI Chair owner
Great chair, arrived within 7 days of order. I have some knowledge of tools and due to size it is definetly a two person job. I did not get the white glove service and it was an easy assemble. It is used on a daily basis. (Posted on 5/1/2014)
Good ChairReview by Quality Chair
Very good price point for the options. (Posted on 4/23/2014)
GreatReview by Matt
Not sure how we were lucky enough to pick this chair. pure luck!!!!! We have enjoyed every day with it. would recommend it to anyone. (Posted on 4/17/2014)
NoisyReview by Teaguer
The chair works well and provides a great massage. The zero-gravity feature is very relaxing. The issue I have with the chair is that it is becoming noisier all the time. The massage arms sound like they are grinding. I have contacted and they have helped me get in touch with Osaki to figure out what the issue is. (Posted on 4/17/2014)
greatReview by zeb
4 months use everyday love it (Posted on 4/16/2014)
YippeeReview by Deanna May
I feel like I got a steal of a deal on this chair---It does everything listed and more. I can't help but brag to all of my friends! They all want one now too. I got the new 4000T and my tootsies thank me every time I use my chair! I have the cream color and it looks stunning in my bedroom. My brother and my husband had it up and going in about 45 minutes (the manual is a little skimpy but it wasn't hard to figure out) and we've been relaxing to our hearts desire ever since. Thank you for making the purchase and delivery easy, easy, easy! (Posted on 4/14/2014)
hard to learn but well madeReview by relaxer
it doesnt come with nor is a Users Manual available on line. what they offer is the name of the button but not a description of what it does. so the only way to know what you're doing is to push every function button and memorize the action = pretty lame. the chair is well made and works well. it could use more aggressive neck & shoulder functions. (Posted on 2/26/2014)

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