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Osaki OS4000B Model OS-4000 Zero Gravity Executive Fully Body Massage Chair, Brown, Computer Body Scan System, True Ergonomic S-Track, Upgraded PU covering for Increase Durability and Comfort

Osaki

32 customer reviews

| 92 answered questions

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About the product

Computer Body Scan System, True Ergonomic S-Track, Upgraded PU covering for Increase Durability and Comfort
Six unique Pre-Set Programs, Easy-to-use Large LCD Display Remote with Wireless Remote, 2 Stage Zero-Gravity Positioning Inspred by NASA
Foot, Calves, Arm, Hips and Shoulder Air Pressure Massage; Hips and Lumbar Squeeze; Auto Timer Setting from 5-30 minutes Massage Session
5 Levels of Speed and Intensity for the Massage, Seat Vibration Massage, Full Size Easy-to-Use Remote, Lower Back Heat Therapy
Auto Leg Scan, Seat Vibration, Intensity Control, Manual Mode, 8 Pre-Set Programs

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Color: Brown

Product description

Color:Brown

Osaki OS4000B Model OS-4000 Zero Gravity Executive Fully Body Massage Chair, Brown, Computer Body Scan System, True Ergonomic S-Track, Upgraded PU covering for Increase Durability and Comfort

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. This also reduces the vertical stress on the spine. There are 2 stages of zero gravity, the 2nd being more reclined. Study show that when the legs are at or above heart level, it promotes better circulation.

Key Features

Computer Body Scan System
True Ergonomic S-Track
Upgraded PU covering for Increase Durability and Comfort
Six unique Pre-Set Programs
Easy-to-use Large LCD Display Remote with Wireless Remote
2 Stage Zero-Gravity Positioning Inspred by NASA
Foot, Calves, Arm, Hips and Shoulder Air Pressure Massage
Hips and Lumbar Squeeze
Auto Timer Setting from 5-30 minutes Massage Session
5 Levels of Speed and Intensity for the Massage
Seat Vibration Massage
Full Size Easy-to-Use Remote
Lower Back Heat Therapy
Auto Leg Scan
Seat Vibration
Intensity Control
Manual Mode
8 Pre-Set Programs

Specifications

Rated Voltage: 110-120V
Rated Frequency: 50/60Hz
Main Body Dimensions (LxWxH): 52" x 31" x 34"
Vertical Size (LxWxH): 38" x 25" x 15"
Gross Weight: 255 Lbs
Net Weight: 213 Lbs
Auto Timer: 5/10/15/20/25/30 minutes
Length of the Wire: Controller wire 1.2m/Power supply wire 2.1m

Product details

Color: Brown

Product Dimensions: 47 x 32.5 x 46 inches ; 230 pounds
Shipping Weight: 281.4 pounds (View shipping rates and policies)
ASIN: B009R5W6A6
UPC: 736211484017 791102466299 793936886908
Item model number: OS-4000 Brown Black
Average Customer Review: 32 customer reviews
Amazon Best Sellers Rank: #213,683 in Health & Household (See Top 100 in Health & Household)
- #171 in Health & Household > Wellness & Relaxation > Massage Tools & Equipment > Professional Massage Equipment > Salon & Spa Chairs
- #61972 in Health & Household > Personal Care > Skin Care

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Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

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Customer reviews

3.9 out of 5 stars

5 star		63%
4 star		19%
3 star		12%
2 star		0%
1 star		6%

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Top customer reviews

A good chair that could be great with a few improvements.

ByJohn D'ortoon December 8, 2014

Color: BlackVerified Purchase

I've had my Osaki OS-4000 massage chair for about 1 week now. Both my wife and I really like the chair quite a bit. There are some pros and cons you should be aware of though.

Pros:
* The chair is very comfortable and the Zero G recline feature adds greatly to the comfort.
* The calf, foot, arm, hip and shoulder massage work quite well.
* You can get a very good neck and shoulder massage if you do not use the pillow (the pillow can be flipped over the back of the chair if you do not wish to use it).
* The back massage is good. My favorite setting is the rolling.
* The heat feature feels great.

Cons:
* I like a very firm massage. In my opinion, the back massage of the Osaki OS-4000 is not strong enough. There is a cloth insert that is in the backrest that dulls the strength of the back massage. Even when this is removed, the back massage is still not strong enough for my preference. The back massage is good but would be absolutely great with a just a bit more strength. For comparison, we used to own a Brookstone Human Touch massage chair that we bought back in 1999. That had fantastic strength for the back massage rollers.

* The back pillow can be comfortable depending on your height. I am 5' 7" and the pillow is comfortable for me but not for my wife who is 5 feet tall. The pillow cannot be removed from the chair. You can drape it over the back of the char if you want. I find that if I do this, I actually get a better neck massage that with the air cushions in the pillow itself. Sometimes I use the pillow but sometimes I prefer not to.

* The controller on the chair has many flaws in my opinion. Some of the buttons are backlit but the vast majority of them are not. The print for the buttons is extremely small. I have better than 20/20 vision. If I can't see the text, most others will not be able to do so. I use the chair in a dimly lit room. It is not possible to see what most of the buttons are in low light conditions. You have to memorize the locations. I'm considering buying a light I can attach to the controller for this purpose.

* There is a convenient mini-remote included. Well... it would be convenient if it worked. Mines does not. Maybe I just need a new battery.

* I am not a fan of most of the pre-programmed massage settings. Like others have mentioned, the Smart setting can really hurt your calves and feet at times. Thankfully it is the only setting I have found that does this. I have actually had to stop the massage because it was too painful on my calves.

* I was very surprised to find that the chair was delivered UNASSEMBLED. This was NOT mentioned anywhere in the listing. The chair weighs over 300 lbs so moving it is quite difficult. If you have an option to get a white glove service, I suggest that you take it. I was able to assemble the chair but with significant difficulty. Osaki changed some parts and did not update the instruction manual for assembling the chair. Online videos I found on youtube did not show the newer parts either. I figured it out but it was not a fun experience.

* There was absolutely no warranty information provided or contact information for the company.

* The heat can take at least 5 minutes before you feel it. You can always turn it on before you are ready to get in the chair.

* There is a 30 minute timer limit and the chair cannot be used more than 60 consecutive minutes without a cool-down period. Good luck finding that information online.

* The controller needlessly beeps loudly at certain times during the massage. It isn't a constant beeping but it might beep loudly for 5 seconds at 3 points during a 30 minute massage. This is supposed to alert you of opportunities to adjust certain settings such as strength or airbag intensity. Since there is a display on the controller, it isn't needed though unless you are visually impaired. The unfortunate part is that you cannot turn the beeping off.

11 comment 133 people found this helpful. Was this review helpful to you?YesNo

Can't believe I paid $2500 for this chair

ByC Aon December 21, 2016

Color: BlackVerified Purchase

Pros: it's chair shape
Cons:
No foot massage, has balls for foot massage, but they don't move.
The entire massage consists of air cushions inflating and deflating, with a very weak back roller that can barely be felt.
No butt massage rollers, only vibration.
You can't use over 60 min because it needs a cool down period.
Long story short: if you want a chair with foot massage, butt massage, and back massage I would skip this chair. I would say this chair is only worth around $800. Very poor quality.

0Comment 28 people found this helpful. Was this review helpful to you?YesNo

Need a exchange for my leg condition

ByAmazon Customeron September 21, 2017

Color: BrownVerified Purchase

It's not what I exspected as far as the leg part of the massage air part witch is what I need the most part I have a sciatic nerve problem in my lower back and legs really wish for what I paid for it I could exchange for what I do need

0CommentWas this review helpful to you?YesNo

Good device

ByIgor V. Zavoychinskiyon May 14, 2014

Color: WhiteVerified Purchase

I use it for just several day so far so, it's just first impression for now. The chair is of very good quality: solid design, components fit well (it comes disassembled), leather (or whatever it is) is of good quality. Chair has a lot of settings which I didn't yet investigate. Though, there are four presets you can use right away. I liked "Circulation" and "Relax". Tried "Smart" but found it too aggressive - feels like you're being tortured thru crushing. There are also "subsets" you may choose with just one click of a button - "Back & Lumbar" is my favorite.

I'd also note "Zero-G" mode. It's advertised as a key feature of the product and it's really cool. You may enable this mode for some massage types but not for all. In this mode chiar puts you in kind of horizontal position. It's comfortable and massage feels much better. If you gonna use this mode you must ensure there are at least 23" of free space behind the chair. So, you cannot put it close to a wall.

Some cons noticed so far:
1. Remote control has very limited sensitivity - you need to target very precisely if you want it working. Btw, remote control is not advertised. It has only basic features like "power", "zero-g" and some strength adjustments.
2. Main control board is mounted on a metal stick which is very unstable. It's hard to operate using just one hand and if you're using Zero-G or any other horizontal mode one hand is all you have.
3. Assembling manual is a bit outdated. Though, I figured out what to do without any problems.

When you request delivery be aware of three things:
1. It's really heavy! Total weight is about 200lb. Max weight of the biggest part I'd estimate to ~120-140lb.
2. Chair comes in two boxes and one of them has dimensions 50" x 30" x 38". In my house I have doorways of 31" width and due to layout it was impossible to move both boxes to the room so, delivery guys left the biggest one in the garage. I had to move all parts to the target room by my hands and it wasn't fun.
3. Even if you don't need to move parts throughout your home you still need assistance of another person to assemble the unit. You can do it yourself but trust me - it doesn't worth it. You buy this chair to *heal* your back, right? :)

11 comment 34 people found this helpful. Was this review helpful to you?YesNo

love it

ByAmazon Customeron September 17, 2014

Color: BlackVerified Purchase

I have m.s. and to keep my muscles active it was recommended for me to have weekly massages. This chair works fabulous for this and has already saved me quite a bit and has done a more thorough job than going to someone. Love chair and you can change intensity to your preferences.

0Comment 7 people found this helpful. Was this review helpful to you?YesNo

Most recent customer reviews

Relaxing

We love this massage chair. We get regular massages too but this is perfect for days where you need to relax and/or have your body rubbed.Read more

Published 2 months ago by Amazon Customer

GET THIS CHAIR!!!!!

Awesome chair! Worth every penny.

Published 7 months ago by Rick B Ham

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Published 8 months ago by Charles E. Lewis

My back was so sore but now it feels so much better thanks to the massage chair

This massage chair helps me out a lot. My back was so sore but now it feels so much better thanks to the massage chair. My legs also feel great as well.Read more

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Perfect gift for my workaholic husband after a stressful day/night ...

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Published 9 months ago by Amazon Customer

Needs some work but awesome chair

My original post is below. I am revising it. My husband failed to tell me that it had additional padding you can remove for more intense work.Read more

Published 1 year ago by Kindle Customer

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There is no sensor to stop the leg length like a video on youtube indicates. If you are 5'10 or shorter this is good for you but I'm 6'1' and it doesn't extend the legs long...Read more

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Five Stars

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Published 1 year ago by Mary S.

I LOVE THIS CHAIR

I can not speak as to how this chair compares with others. I have never owned a massage chair before this one but holy smokes do I love this one.Read more

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