Osaki OS-4000T Massage Chair Black On sale!

Osaki OS-4000T Massage Chair

4.8181818181818 out of 5 based on 44 customer ratings
(44 customer reviews)

+FREE 2 Yr. Extended Warranty (5 Yrs. Total)
Regularly $3,199

MassageChairDeals.com’s Best-Selling Massage Chair!

The Osaki OS-4000T is a full function massage chair that automatically detects the natural curvature of the human body and adjusts the massage to fit. The Zero Gravity position elevates the legs above the heart and more evenly distributes your weight. The OS-4000T also features hip air massage, seat vibration massage, neck and shoulder air massage, air and vibration arm massage, heat therapy for your lumbar/lower back area, and foot rollers.

Choosing your massage is easy with the 7 unique auto programs: Muscle Relief, Thai, Stretching, Anti-stress, Demo, Neck/Shoulder, and Back/Lumbar, 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.

There is also automatic massage settings for the upper body (shoulder, neck, back and lumbar) and the lower body (buttock, thigh, calves and feet). You can manually adjust the massage for the upper body with three options: full body, partial and fixed.

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Product Description


  • 2-Stage Zero Gravity Massage Chair: The Zero Gravity recline position places your legs above your heart and evenly distributes your weight across the chair. This position has been found to relieve pressure on the spine, relaxes the neck and back, increases circulation and blood oxygen levels, expands lung capacity, and helps correct spinal alignment
  • S-Track Movable Intelligent Massage Robot Design: The OS-4000T’s quad-style massage rollers in the backrest of the chair follows the natural S-curve of the human spine to evenly target the neck, shoulders, mid and lower back with the same massage pressure. Many massage chairs are designed with an uncomfortable straight track that provides an intense massage in the mid-back region and poorly targets the neck and lower back regions. The S-Track Robot, however, provides a uniform, hand-like massage on your neck, shoulders, back and lumbar region
  • Advanced Computer Body Scan Technology: The OS-4000T scans your entire body prior to your massage to customize it specifically for your body type and size. The chair’s technology now allows the rollers to map the back curvature with more accuracy than ever before. Plus, you can make micro adjustments as needed to bring a more humanistic and scientific massage approach
  • Seven Unique Auto Programs: Choose from Muscle Relief, Thai, Stretching, Anti-stress, Demo, Neck/Shoulder, and Back/Lumbar
  • Six Manual Mode Techniques: Create your own custom massage and choose from several massage roller techniques, including Shiatsu, Swedish, Kneading, Clapping, Rolling, and Combo
  • New! Foot Rollers: The OS-4000T now uses reflexology technology to target the pressure points as mechanical rollers spin underneath your feet. Foot rollers stimulate circulation and soothe tired feet. Foot rollers are a new addition to this model
  • 38 Airbags: The OS-4000T wouldn’t be a full body chair without the addition of air massagers. The 38 massagers are pumped with air and wrap around the regions of the body the S-Track roller system can’t reach, providing a rejuvenating compression and stretch. The airbags massage the outer shoulders, neck/head, arms, hips/waist, buttocks, hamstrings, calves, and feet. You can choose from 5 intensity levels to customize the air massage strength to your preference
  • Seat Vibration: A mild vibration targets the thighs and buttocks inside the seat. A vibrational massage relaxes muscles, promotes blood flow and releases tension
  • Updated Upholstery: The OS-4000T features updated upholstery not found in the previous model, the OS-4000. The improved synthetic leather material is designed to be more durable than its predecessor
  • Lumbar/Lower Back Heat Therapy: The OS-4000T’s built-in heating pads provide relief to those suffering from lower back pain by increasing the oxygen flow to aid in healing damaged tissue. Heat therapy also forces your lower back to press more firmly against the backrest for a stronger and deeper massage
  • Automatic Massage for the Upper Body (shoulder, neck, back and lumbar) and the Lower Body (buttocks, thigh, calves and feet)
  • Ships in 2 Boxes: The OS-4000T is shipped in two (2) boxes — a big box that contains the base of the chair, backrest, foot ottoman, and remote. A separate, smaller box contains the chair’s side panels


All Day. Every Day. 24/7.

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$5999 $4399

Free Extended Warranty


Osaki OS-4000T Massage Chair with Foot Rollers

Osaki OS-4000 Zero Gravity Massage Chair Specifications

Zero Gravity

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. There are two stages of Zero Gravity, the 2nd being more reclined, relative to the seat base.

The Zero Gravity position relieves pressure on the spine, relaxes the neck and back, increases blood oxygen levels, and expands lung capacity. When reclined fully, to where your legs are higher than your heart level, the therapeutic effects are incredibly effective and may be felt immediately.

Osaki OS-4000T Zero Gravity Recline

New! Foot Rollers

Located on the bottom of the feet are 2 rows of spinning reflexology massagers which provide a soothing kneading style application. As the rollers spin it will stimulate acupuncture points. Additionally, the airbags inflate and deflate simultaneously on the sides of the feet, which push the bottoms of the feet into closer contact with the foot rollers. This results in a much deeper foot sole roller massage. This is a perfect feature for those who have sore and tired feet.

Osaki OS-4000T Foot Rollers

Computer Body Scan: Automatically Detects the Whole Body Curve

Equipped with the latest technology, the Computer Body Scan allows for the rollers to map the back curvature with even more accuracy, which translates into a more precise massage that hits all the key areas. Based on your weight and height, the OS-4000T makes micro-adjustments which makes each massage feel like a customized experience.

Osaki OS-4000T Computer Body Scan Technology

Designed with a S-Track Movable Intelligent Massage Robot

Ergonomically designed with the shape and curvature of the human spine in mind, the S-Track Robot provides support to your neck, back and lumbar area, according to your body curve. This, in turn, increases the effectiveness of your massage.

Next Generation Air Massage Technology

Osaki has re-engineered and has developed the next generation of air massage technology, streamlining the air massager to a lower count. Through innovative engineering, we have reduced the total number of airbags but have increased the volume and surface area of massage. By doing so the total number of working valves has drastically reduced from the prior model. This ultimately puts less stress on the chair, making it one of the most mechanically sound massage chairs on the market.

The OS-4000T includes 38 airbags, covering all the areas not massaged by the roller system. This includes the outer shoulders, arms, calves, the waist/hips, inside the seat, and inside the neck/head pillow. The combination of the OS-4000T’s back rollers and airbag system makes this system a full body massage chair — covering everything from the head all the way down to the bottoms of the feet.

Osaki OS-4000T 38 Airbags

Air & Vibration Arm Massage

Along with mechanical advancement and material upgrades, the OS-4000T now features a durable spandex pocket which allows you to massage your arm and hands. The bottom portion of the arm massager has been lined with small rubber bumps to invigorate the senses. Sit back and relax as the the airbags compress on the top and bottom of your forearms and hands.

Osaki OS-4000T Arm Massage

Auto Recline and Leg Extension

The fully automatic, luxurious OS-4000T is designed to make every movement effortless. The simple to use remote control allows you to operate the foot extension, leg rest, recline, and the Zero Gravity position.

Osaki OS-4000T Auto Recline and Leg Scan

Wireless Controller

Located on the side 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 while in the reclined position.

Comprehensive Foot & Calf Massage

The OS-4000T features 14 airbags that inflate and apply a compression massage for your calves and feet. In addition, spinning rollers are located along the bottom foot massager that apply a concentrated pin-point kneading massage.

Shoulder, Lumbar & Hip Squeeze

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

Osaki 4000T Stretching

Lower Back Heat Therapy

The OS-4000T’s lower back region features two heating pads that enhance the massage experience. Research has shown that lumbar heat therapy provides relief to those suffering from lower back pain. It does so by increasing the body’s oxygen flow, which in turn plays a role in healing damaged tissue. Heat therapy also forces your lower back to press more firmly against the backrest for a stronger and deeper massage.

Easy to Use LCD Display Remote

The OS-4000T remote boasts one of the largest viewing screens to easily visualize what functions the chair has activated. There is also a flip down cover to access the manual functions of the chair. The remote allows you to select the massage type, intensity, speed and location.

In the manual mode, you can also independently select a specific area of the body you want the chair to massage with the rollers and/or the airbags. Manual massage techniques include kneading, tapping, shiatsu, rolling, combination and Swedish.

Osaki OS-4000T Remote Control

Designed with Five Levels of Speed & Intensity

The air intensity of the airbags can be controlled up to 5 levels. Choose from mild to strong for both the back and lower body. The roller heads that apply the massage to the back can be extended outwards, causing the rollers to press more firmly along the back. This will result in a more vigorous massage.

The speed in which the massage heads move can be controlled up to 3 different speeds, ranging from slow to fast.

Three Types of Width Adjustable Settings

Choose from Wide, Medium & Narrow. If you want the massage heads to concentrate on the outer shoulders and outer back, choose the wider option. If you want the massage heads to be closer together near the middle of the back, choose the narrower option.

Auto Leg Scan

The calf and foot massager is capable of making adjustments according to each individual’s leg length, ensuring that the massage airbags are concentrating on the correct areas. At the start of the massage, the chair will fully extend out and then retract. Once the foot massager has reached the desired length, firmly press down along the toes to indicate to the chair to stop.

Osaki OS-4000T Massage Chair Automatic Leg Scan

Seat Vibration

Located in the seat base is a vibration plate that provides a vibration massage to the back of the thighs and buttocks.

Osaki OS-4000T Seat Vibration

Six Unique Auto Programs

Choose from the straight-out-of-the-box Muscle Relief, Thai, Stretching, Anti-stress, Demo, Neck/Shoulder, and Back/Lumbar options.

Six Customized Massage Styles

Options include Rolling, Kneading, Clapping, Shiatsu, Swedish and Combo.

Manually Pinpoint Your Massage

You can select to receive a (1) Full Body massage; (2) target a Partial region of the body; or (3) target a Fixed, specific area of the body.

Auto Timer

5-30 minutes of usage can be programmed. You can increase the duration of the massage in 5 minute increments, up to 30 minutes. This is a safety measure to ensure that if you fall asleep, the massage will stop running to prevent any injuries.

Massage Chair Targets

The OS-4000T is an all-in-one mid-strength massage chair that targets the back, shoulders, neck, arms, hands, hips, lumbar, buttocks, thighs, calves and feet.

Osaki OS-4000T Massage Chair Components

Read our Osaki OS-4000T Review

Questions? Interested in purchasing? Chat with us at any time or give us a toll-free call at 844-862-4391


Suggested User Height 5’2 – 6’2 ft.
Suggested Max. User Weight 265 lbs.
Roller Track Length 30 inches (S-Track)
Number of Airbags 38 Airbags
Number of Auto Programs 7 Auto Programs
Heat Lower Back
Timer 5-30 minutes
Maximum Operating Period 30 minutes
Chair Upholstery Synthetic Leather
Product Dimensions Approx. Upright: 47″ H x 32″ W x 48″ D
Approx. Full Recline: 47″ H x 32″ W x 76″ D
Weight Shipping weight: 284 lbs.
Product net weight: 214 lbs.
Ships in 2 Boxes Big Box Dimensions: 37.2″ H x 30.3″ W x 52.4″ D
Small Box Dimensions: 15″ H x 25.6″ W x 37.8″ D
Number of Motors 7 Motors
Remote Type LCD Pedestal Remote and Wireless Remote
Power Consumption 250 Watts
Usage condition Environment temperature: 50° – 104° F
Storage condition Storage temperature: 68° – 140° F
Safety feature Equipped with overheating and power surge safety protection
Usage benefits Increasing blood circulation; Relieving muscular fatigue
Origin Made in China; Ships from the USA


choose from one of these 3 shipping options:

1) Curbside Shipping - FREE

All of our massage chairs qualify for free curbside delivery, which typically ships within 1-3 business days of placing your order. Once the chair arrives at your local delivery terminal, the delivery company will give you a call to arrange a delivery window. Please note that the delivery person is not responsible for carrying the chair into your home, though they may if you ask them to do so. Also note that depending on the chair you are purchasing, it will arrive unassembled. Assembly instructions are included in your chair’s packaging and can be installed in about 15-60 minutes.


If you prefer to have your massage chair assembled for you, a White Glove Delivery upgrade is offered for this massage chair. If this option is selected, a professional installation team will schedule an appointment with you to determine the best time to deliver your massage chair. Once the delivery team arrives, they will carry the chair into your home or business, remove the packaging, and install it in the room of your choice. Your chair will be operating correctly before they leave.


If you prefer to have your massage chair brought inside your home or residence, a Threshold Delivery upgrade is offered for this massage chair. Your massage chair will be brought just beyond the main entrance of your residence or business, but not to a specific room. It can also be stored in your garage. This shipping method does not include assembly nor the removal of packaging. Threshold Delivery is a happy medium between free Curbside Delivery and White Glove Delivery. The vast majority of our customers are most concerned with the hassle of hauling the chair’s packaging in their home or business, and are capable of assembling the chair themselves (if necessary). This is fulfilled with Threshold Delivery.

Choose From One of These 3 Warranty Options:

3 Year "Rock Solid" Warranty with Limited Parts and Labor - FREE

Osaki guarantees that your qualified product will be replaced or repaired at our option, 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. This warranty plan includes one (1) year of in-home labor, two (2) years of parts and structural framework, and three (3) years of structural framework.


1) 1 Year Extended Warranty (4 Years Total) - $149

For an additional price, Osaki guarantees two (2) years of in-home labor, three (3) years of parts and structural framework, and four (4) years of structural framework.

2) 2 Year Extended Warranty (5 Years Total) - $249 FREE

For an additional price, Osaki guarantees three (3) years of in-home labor, four (4) years of parts and structural framework, and five (5) years of structural framework.

NOTE: Your preferred warranty option can be selected prior to adding the chair to your cart. This product currently comes with 2 years of extended warranty coverage, for a total of 5 years, for no additional cost. This is regularly a value of $249. Limited time offer.

1 review for Osaki OS-4000T Massage Chair

Customer reviews

Rated 4.8181818181818 out of 5 stars
44 reviews
  1. Answer to Prayer!The massage chair is an answer to prayer! I have had multiple back surgeries and have chronic back issues which affect my quality of life. With this massage chair, I feel that I have my life back. I LOVE it and recommend it to all back pain sufferers. It's also great at knocking out steps in your back and muscles. LOVE, LOVE, LOVE IT!

    Was this review helpful to you? 5 of 7 people found this review helpful

  2. Oksana 4000excellent customer service!: been a game changer for me and my husband

    Was this review helpful to you? 4 of 6 people found this review helpful

  3. EnergizedWe give 5 stars to both the Osaki OS4000T and to massagechairdeals.com. The chair arrived when promised, was assembled a white glove service, and daily use has made a huge improvement in how our senior bodies feel. We sleep better, have greater mobility, and no pain.

    Was this review helpful to you? 14 of 14 people found this review helpful

  4. I really enjoy this chair!Sitting in this chair at the end of the day really helps me to relax for sleep. I cannot believe how awesome it is. It is better than any real massage I’ve ever had. It helps with my aches and pains most of all. Excellent investment in my health.

    Was this review helpful to you? 8 of 10 people found this review helpful

  5. great purchase !I love this chair ! It is so quiet I could fall asleep in it. I use it almost everyday just to keep away the tight muscles. I'm on my feet all day and the foot rollers feel great. I would and have recommended this chair to others. Glad I decided to purchase it.

    Was this review helpful to you? 14 of 16 people found this review helpful

  6. Very nice massage chairWe love this chair when we start use it. Only thing we fell not very unconvincing is the neck message part when you want strong message on your back. You need find a way to keep the neck message part falling when you under zero gravity position.

    Was this review helpful to you? 9 of 11 people found this review helpful

  7. Massage chairHave had 3 months and love it. Had an issue with leg attachment .They were here within a week to fix it.

    Was this review helpful to you? 14 of 14 people found this review helpful

  8. Great chair for the moneyWe are very happy with our Osaki chair, as both my wife and I use it at least once daily. I do wish there was a bit more contact on my neck, and more space for my shoulders. Otherwise, no complaints!

    Was this review helpful to you? 13 of 14 people found this review helpful

  9. WonderfulI bought this chair to help me with my pain that I have due to my medical condition. It has worked wonders on my body. It has really helped me alot to alleviate my pain and stressor points. My husband has now taken over it now. I love how it stretches your body and the heat on it is an great added benefit. The muscle relief is my favorite setting. It does all that I need. This was one of the best purchases I could've ever done.

    Was this review helpful to you? 13 of 13 people found this review helpful

  10. Very effectiveI bought this chair for my husband and he really likes it. It does a great job on the lower back, legs, arms, feet. It is well-made. My only complaint is that it doesn't really get his neck as he would like. There is a pillow that hangs down that has air pumped through it to massage the neck, but it is not vigorous enough for him. I wish we had chosen a chair that had a better neck massage as that is his tightest area.

    Was this review helpful to you? 13 of 13 people found this review helpful

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