The Osaki OS-4000CS Massage Chair Review

The 4000 series massage chair from Osaki is a well known series as Osaki produces high quality massage chairs. The Osaki OS-4000CS massage chair is the most expensive of the lineup. But it does come with the best features from its 42″ roller length to its space saving recline track. There are cheaper chairs on the market but there are also more expensive ones. Does it provide a good value for the cost conscientious consumer? I would read on if I was, especially if I am looking at mid-range massage chairs for close quarters.

An Introduction Into The Osaki OS-4000CS Massage Chair

The Osaki OS-4000CS massage chair is the best available from Osaki's 4000 series. Not only is it the best, it is also the most popular product as it provides a range of great features such as zero gravity, space saving technology and adjustable shoulders. All for a price tag of $3,295.00. But do not let that price tag scare you! This is a lasting product and provides everything which is required to ensure that you enjoy your purchase, especially as Osaki is a brand with a reputation to maintain.

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Quick Glance Main Features
Here's the main feature list for the Osaki OS-4000CS Massage Chair, feel free to click on any of the features listed below to read up on more details about each feature (where applicable):

Space Saving Recline Technology
L-Track Massage
Zero Gravity Positioning
Lumbar Heating Pad
​24 Airbag Massage

​Computer Body Scan

The Osaki OS-4000CS Massage Chair's Basic Product Specs
Here's an overview of the basic specs for this particular model:

  • Full Product Name: OSAKI OS-4000CS
  • ASIN: B01M0XO9E5
  • Rated Voltage: 110-120V
  • Rated Frequency: 50/60Hz
  • Rated Power: 200W
  • Assembled Dimensions (W×L×H): 30″×63″×47”
  • Reclined Dimensions (W×L×H): 30”×78”×34”
  • Shipping Weight: 275 pounds
  • Item Weight: 250 pounds
  • Material: Synthetic Leather
  • Colours: Black, brown and ivory
  • Release Date: September 27, 2016
  • Maximum User Height: 6’4”
  • Minimum User Height: 5’0”
  • Maximum User Weight: 235 pounds
Model Pros Vs Cons


  • Has a wide selection of colours.
  • Suits a large range of sizes from 5’0” to 6’4” and up to 235 pounds.
  • Has space saving technology so that it takes less space.
  • The product can be purchased with a person who installs this for you.


  • For some reason Osaki decided to remove the spinning reflexology massagers from the 4000 series massage chair which reduces the foot support capabilities of the chair.

A Closer Look At The Osaki OS-4000CS Massage Chair
Space Saving Recline Technology

Not a lot of chairs attempt to target the smaller homes. This is one of those chairs which are designed to be able to be used in smaller environments. Normally a chair would recline by having the backrest move downwards, requiring space behind the chair to fully recline such as 3 feet. With this product, the recline process can be done in just 6 inches as it slides the massage chair forward while the chair reclines. This is a wonderful technology if you live in a small property or just simply do not want large gaps behind your furniture.

L-Track Massage

The L-track system allows massages from the neck to the thighs. Normally, an S-track is used which only massages the spine, however, with an L-track system, the legs are also able to be massaged by rollers instead of the standard airbag massage. This allows for the user to feel more relaxed and obtain a more complete massage.

Zero Gravity Positioning

The zero gravity position is a method which positions the body in a less stressful position, enabling the body to release tension from areas such as the spine. By placing the legs higher than the body, the body enters a more relaxed state and is able to let the body recover.

​24 Airbag Massage

The massage chair has 24 airbags which allows for a great complete massage as it is able to cover the entire body. They are placed over the shoulders, arms, hands, hips, feet and calves. Other brands will use 70 or more airbags however, Osaki is able to reduce the airbag count by increasing the surface area of them which gives the air pump less stress and thus also increase the longevity of the massage chair.

​Computer Body Scan

Every person’s body is unique. The massage chair is able to map out a user so that it provides an effective massage as it targets the correct locations rather than having a one-size fits all program which would not work considering the wide range of heights which are able to use this device. For example, without this technology the massage chair’s rollers may be programmed to move 50 centimetres, however, considering that you are 100 centimetres, it would be an ineffective massaging experience. This is why it is crucial to get a massage chair with computer body scan technology so that a specific massage is given.

Lumbar Heating Pad

Heat therapy is able to increase blood circulation and loosen muscles which complements the massage as the body is able to feel less pain from the body being tense. The heating also provides warmth which is a great bonus as it makes the massaging experience more comfortable.

Feedback From Customers Who Bought The Osaki OS-4000CS Massage Chair

There is not a lot of feedback on this product as massage chairs are not purchased often and that these people generally do not like to post feedback. Luckily there is a feedback on Amazon which states that the chair works and it is able to relieve the daily problems in life such as aches and pains. This person who is also a verified purchaser rated it five out of five stars. As there is only one review, it is unclear on what the general public thinks but so far it is very positive towards the product. We will update this section when more reviews are posted. This section was last updated on the 31st of July 2018.

See The Reviews From Others Who Bought The Ideal Shiatsu Massage Chair On Amazon
Are There Any Problems With The Osaki OS-4000CS Massage Chair?

There does not seem to be many problems with this device as it solves the general problem of one size fits all by its computer scanning technology which enables it to provide users with more specific massages and that as it is able to be used for people from 5’0” to 6’4”, it is able to be used by the majority of people. We will update this section when more problems are brought up and especially as this product is rather new, the long-term issues have not been shown but so far the product appears to be excellent. However, it is upsetting that they no longer have spinning reflexology massagers which reduces the foot support of the chair. This section was last updated on the 31st of July 2018.

The Best Places To Purchase The Osaki OS-4000CS Massage Chair

The best place to purchase this product is on Amazon. After researching different websites for prices, Amazon provides the same or cheaper price. This will remain consistent for a long-period of time as Amazon is the goto location for retailers and consumers. Due to a network effect, retailers need to be on Amazon to not lose market share to others and as individual sellers are also able to sell on Amazon, when there are hidden sales for these massage chairs, people will list it on Amazon in attempt to buy low and sell higher, primarily as their purchase price is lower than the current lowest price. Thus, the lowest prices will always come to Amazon, whether it is by resellers or by retailers.

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Videos Of The Osaki OS-4000CS Massage Chair

Here is the advertisement for the Osaki OS-4000CS massage chair. I would take this video as more of a description of the product rather than the final say as it is designed to impress people by the product, especially as it is an animation of the chair.

This video introduces you to the product in real life and you can see it operate.

This is another quick demonstration of the product and what it is able to do.

Image Gallery
Common Questions About This Model

Where is the Osaki OS-4000CS massage chair made?

The chair is made in China where most chairs are made as it is able to be produced for cheaper and then you are able to pay less for the same product. Just because it is produced in China does not mean that it is of terrible quality as Osaki oversees the production process to ensure that top quality is maintained.

Can the Osaki OS-4000CS massage chair fit through a standard door?

The chair should fit through a standard door as the product is 64″×30″×47″. As the product comes disassembled it is able to be taken inside the property piece by piece if necessary.

What material is the Osaki OS-4000CS massage chair made out of?

The chair is made out of synthetic leather which is standard.

What are the power requirements of the Osaki OS-4000CS massage chair?

The rated voltage is 110-120V with a rated frequency of 50/60Hz, totalling to a rated power of 200W.

What are the dimensions of the Osaki OS-4000CS massage chair?

When the chair is fully assembled it occupies 30″(W)×63″(L)×47”(H) and when it is reclined it occupies 30”(W)×78”(L)×34”(H).

How much does the Osaki OS-4000CS massage chair weigh?

The product weighs 275 pounds when it arrives during shipping and after assembly, it will lose 25 pounds, weighing 250 pounds.

What colours does the Osaki OS-4000CS massage chair come in?

The chair comes in three colours, black, brown and ivory.

When did the Osaki OS-4000CS massage chair release?

The chair was released on the 27th of September 2016.

What sizes of people does the Osaki OS-4000CS massage chair suit?

The minimum height for the chair is 5’0” and the maximum is 6’4”. The maximum weight of the user is 235 pounds.

Do I need to assemble the Osaki OS-4000CS massage chair?

Massage chairs will all need to be assembled on site. The assembly process is relatively easy and they provide a manual to aid on the installation process. They also provide the installation equipment so that you do not need to specifically go out to get the tools. It is in one seamless package.

What is the warranty on the Osaki OS-4000CS massage chair?

Osaki provides a 3 year warranty where the chair can be repaired or replace without any extra costs. In the first year Osaki provides labour, parts and structural framework but in the second year, they only cover the parts and structural framework and in the final year they only cover structural framework.

What are the delivery options for the Osaki OS-4000CS massage chair?

The product can be delivered on the curbside or as a white glove service where they will bring the chair into the property, assemble and test your chair for you. Delivery on the curbside is cheaper than the white glove service as there is less labour required.

Do I need a signature when buying the Osaki OS-4000CS massage chair on Amazon?

The product needs to have a signature for security reasons as people may steal the package and there is too much risk in case someone takes the product as the purchaser may assume that it was not delivered and this is not worth the hassle for Amazon. In addition, you would not appreciate it if it was stolen as it is an expensive item. Getting a signature on delivery is also a more expensive option than leaving it on the property which shows that Amazon is serious about protecting your purchase.

What does the Osaki OS-4000CS massage chair retail for?

The massage chair retails for $3,295 which places the massage chair into the mid-range category.

Can I get the Osaki OS-4000CS massage chair cheaper on Amazon?

Amazon frequently has special offers and product promotions. Currently as of the 31st of July 2018, there is an offer to get a $50 Gift Card when you get approved for an Amazon Rewards Visa Card. This will provide you with a $50 discount which means that you pay 98% of the current product cost. Not only do you get a $50 discount, you also get rewards with the card.

How durable is the Osaki OS-4000CS massage chair?

From the available information the chair appears to be durable as it currently has no complaints of it breaking down and that it is a product made by Osaki who is well-known to be a good producer of chairs. As it is also a recent product, the lifespan cannot be determined yet. But from statistics of the durability of massage chairs made by Osaki, it will last for a long time.

Can I use the Osaki OS-4000CS massage chair as a normal chair?

The chair can be used as a normal chair. It has features which office chairs do not have such as massaging capabilities and padding, but I would not suggest using it for tasks where you need productivity as the massage chair is too comfy and may lower focus on tasks. But, it is a nice chair to have if you are doing tasks which do not require a lot of focus such as watching television.

Can I try out the Osaki OS-4000CS massage chair before purchasing the product?

There are ways to try out the chair but it will depend on your location. Stores, booths and massage centres may have this chair on their showcase and you may be able to try it out. But it would be difficult to find these locations. You can try search, “Osaki-OS-4000CS Massage Chair <YOUR LOCATION>” for a quick reference on your preferred search engine of local places to see it in real life and potentially try it out.

Conclusion – Is The Osaki OS-4000CS Massage Chair Worth Buying?

The chair is rather new on the market and does not have a lot of feedback. But so far, it is quite positive. With the great technology inside of this device I would consider purchasing the Osaki OS-400CS, especially if I live in a property where space matters. At the mid-range price and providing all the necessities of a massage chair, I would not look too far away from this. Click the link below and check it out yourself. Do not forget to add it to your wishlist if you are serious about purchasing a massage chair for a mid-range price.

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