Osaki OP-4D Master Massage Chair
✓ Ships to All Lower 48 States
Free Curbside Shipping: 2 Weeks
Threshhold In Home Delivery: 3 Weeks
White Glove Delivery: 3 Weeks
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The Osaki OP-4D Master delivers a precise, full-body massage with advanced 4D massage rollers, intelligent body scanning, and an ergonomic SL-Track design for a consistent, deeply relaxing experience.
Unwind and relax with the Osaki Master 4D+. This massage chair provides advanced features such as a thorough shoulder massage, AI body scanning, and zero gravity positioning, which can be controlled with the Osaki Premium Master app or a call to Alexa.
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- Thorough Shoulder Massage
- Shoulder Massage Nodes
- Automatic Shoulder Adjustment
- AI Body Scan
- Smart Voice Control
- App Control
- Touchscreen Controller
- 4D + Massage Mechanism
- 46 Cell Full Body Massage
- Attachable Magnetic Pillow
- SL-Track
- Negative Ion Generator
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- Zero Gravity Reclining and Space Saving
- Lumbar & Feet Heating
- 16 Auto Massage Modes
- 4 Manual Massage Modes
- Extendable Footrest
- Calf Massage
- Foot Rollers
- Side Control Panel
- Phone Charging Surface
- Bluetooth Surround Sound
- USB Charging Port
- LED Mood Lighting
Thorough Shoulder Massage
The Osaki Master 4D+ proudly introduces an over-the-shoulder massage using airbag compression that rotates and moves like real hands. There are a total of 10 individual airbags that synchronize to deliver a soothing massage.
Shoulder Massage Nodes
There is an extra massage node on each side of the shoulder pad to emulate an element of a hand massage on your shoulders.
Automatic Shoulder Adjustment
The chair uses an automatic body scan to detect the user's shoulder height and width, and then automatically adjusts the position of the massage rollers accordingly for a more personalized massage.
AI Body Scan
The Osaki Master 4D+ uses its smart scanning program to read your torso area. Using AI technology, the chair tailors a massage program to you, since every user has a different body type and preferences.
Smart Voice Control
The Osaki Master 4D+ has Voice Control capabilities. The commands can be used through “Alexa” or say the statement “Hi, Osaki” followed by the predetermined commands in the manual.
App Control
If you have an iPhone or Android, go to the App Store or Google Play Store to download the Osaki Premium 4D + Master App to control the massage chair with the full features from the remote on your phone.
Touchscreen Controller
The Osaki Master 4D+’s touchscreen controller allows for easy navigation and adjustment settings. Using its swivel mount, the touchscreen can be conveniently positioned at different angles.
4D + Massage Mechanism
The Master is a four-dimensional massage chair with adjustable levels of intensity, strength, and speed. The Master can also focus on specific spots or partial areas of the back.
Attachable Magnetic Pillow
It is recommended to attach the pillow to the side of the chair before starting a massage to receive a proper shoulder massage.
SL-Track
Made up of Laser-Crafted Steel, the SL-track allows the massage rollers to freely reach the entirety of your back. The SL-Track extends all the way from your neck and shoulders to your hamstrings.
Negative Ion Generator
The Osaki Master 4D+ includes a built-in negative ion generator for a fresh, relaxing atmosphere during your massage.
Zero Gravity Reclining and Space Saving
With the Osaki Master 4D+’s one stage zero gravity reclining, enjoy relaxation in a state of near weightlessness. Osaki’s Space Saving Technology allows for the chair to be placed 3 inches from the wall and still achieve a full recline.
Lumbar & Feet Heating
The Osaki Master 4D+’s lumbar and feet heating system uses its heating coils to deliver soothing warmth along the lower back and feet.
16 Auto Massage Modes
Master’s Choice - The master one.
Health Pro - AI body scan program.
Signature - An outstanding massage program
Sleeping - A gentle wind-down program for bedtime.
Stretching - Guided full-body stretching.
Spine - Focused massage along your back.
Deep Tissue - Deep, focused kneading from spot to spot.
Core - Special focus on your neck and back.
The Golfer - Special focus on your lower back and feet.
Pilates - Pilates-inspired stretching.
Mobile Mode - Neck and shoulder focus for after screen time.
Relax - General relaxation program.
Chinese - Chinese traditional massage.
Sports - Especially for after sports
Morning - To get energetic in the morning.
Evening - The most relaxing one. Good night.
4 Manual Massage Modes
Kneading | Applying kneading motion.
Tapping (I, II) | Rhythmic tapping movements
Shiatsu (I, II) | Japanese style to specific points.
Rolling | Rolling to loosen tight muscles.
Extendable Footrest
The Osaki Master 4D+ was designed for users of different heights and body types. The chair’s automatic spring loaded Extendable Footrest elongates up to 8 inches to adjust to any user in mind.
Calf Massage
The Osaki Master 4D+ includes a relaxing calf massage. It combines a sequence of kneading rollers that move vertically with airbag compression to give a thorough massage to the calves.
Foot Rollers
The Osaki Master 4D+’s specialized foot rollers use reflexology-style ridges to work the soles of your feet. The foot extenders hold three rollers for each foot, to help give a complete massage from heel to toe.
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Side Control Panel
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Phone Charging Surface
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USB Charging Port
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Bluetooth Surround Sound
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LED Mood Lighting
DOWNLOADS
UPRIGHT DIMENSIONS:
68"L x 30.5"W x 50.5"H
RECLINED DIMENSIONS:
72"L x 30.5"W x 42"H
SEAT WIDTH:
18"W
SHOULDER WIDTH:
24.5"W
DISTANCE TO WALL
3"
WEIGHT:
211.6 lbs Net
MINIMUM DOOR CLEARANCE
30.5" Door Width REQUIRED for Delivery
AUTOMATIC PROGRAMS:
16
MANUAL PROGRAMS:
4
PROGRAM RUN TIME:
15 Minutes
RECOMMENDED USER HEIGHT:
5’0”—6’2”
USER WEIGHT LIMIT:
260 lbs
SPECIFICATIONS
DOWNLOADS
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Recommended Weight Limit
260 lbs
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Recommended Height Range
5'0" - 6'4"
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Seat Width
18.0"
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Shoulder Width
24.5"
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Minimum Doorway Size (Assembled)
32"
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Will Fit Through Standard Household Doorways?
Yes
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Chair Dimensions (Upright, W x L x H)
31.5" x 68.0" x 50.5"
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Chair Dimensions (Reclined, W x L x H)
31.5" x 72.0" x 42.0"
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Chair Weight
254.6 lbs
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Package Dimensions (Box 1, W x L x H)
55.3" x 33.9" x 50.0"
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Package Dimensions (Box 2, W x L x H)
23.4" x 20.3" x 22.4"
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Package Weight (Box 1)
249.1 lbs
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Package Weight (Box 2)
49.6 lbs
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Massage Track Type
SL-Track
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Roller Type
4D
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Roller Glute Massage
Yes
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Roller Strength Adjustment
Yes
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Roller Speed Adjustment
Yes
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Roller Width Adjustment
Yes
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Body Scan Technology
Yes
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Distance to Wall
3"
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Zero Gravity
Yes
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Automatic Programs
16
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Manual Massage Styles
6
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Spot/Partial Massage
Yes
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Adjustable Shoulder
Yes
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Extendable Footrest
Yes
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Deep Tissue Massage
Yes
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Bluetooth Speakers
Yes
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Voice Control
Yes (Compatible with Alexa)
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AI Health Detection
Yes
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Heat
Lumbar and Feet
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Auto Timer
15 Minutes
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Airbags
46 Air Cell Compression
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Power Supply
110–120V
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Rated Frequency
50/60Hz
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Country of Manufacture
China
Osaki Standard Manufacturer’s Warranty
Osaki is including a 2-year extended warranty on this chair at no charge. That takes your coverage from the standard 1 year of labor and 3 years of parts up to 3 years of in-home labor and 5 years of parts — a $349.95 value, free. Add the Guardian Platinum Plus Plan to stretch labor coverage to a full 5 years so it matches your parts coverage.
5 Year (3 Years Full Service & Additional 2 Years Parts) Extended Manufacturer's / Parts & Labor Warranty
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 FIVE (5) years of ownership, excluding specific limitations contained herein.
What Is Covered:
- This warranty explicitly covers all parts, labor and framework of the chair.
- This warranty includes parts costs and labor for the first three (3) years at no cost to the customer.
- This warranty includes parts costs covered for five (5) years at no cost to the customer.
- Structural Framework on selected products carries for three (3) years.
- The additional two (2) years of parts and labor coverage are provided by Osaki at no cost on this model — no purchase is required.
MassageChairPlanet.com Staff Approved
Guardian Platinum Plus Plan | 5 Years Parts & Labor Warranty Plus In-Home Service + Accidental Damage
MassageChairPlanet.com offers an optional 5-year extended warranty package that covers parts and labor for a full 5 years, from the date of delivery, with included in-home service. Go above and beyond the manufacturer’s warranty to protect your investment. This is easily the best value when it comes to your warranty options.
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| OS-4000T | OS-Pro First Class | OS-PRO Maestro | OS-PRO Admiral | PRO OS-4D Paragon | |
|---|---|---|---|---|---|
| Model |  |
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| Color Options | Black, Brown, Cream | Dark Grey, Beige, Black/Beige, Brown Beige | Black/Silver, Brown, Beige, Burgundy, Blue | Black, Brown, Taupe | Black, Brown, Beige, Grey |
| Massage Track | S-Track | L-Track | S+L-Track | L-Track | L Track |
| Massage Track Length | 31" | 49" | 52" | 50" | -- |
| Space Saving | No | Yes | Yes | Yes | Yes |
| Intensity | Medium-Strong | Medium-Strong | Medium-Very Strong | Medium-Strong | -- |
| Back Roller Type | 2D | 3D | 4D | 3D | 4D |
| Roller Width Adjustment | Yes | Yes | Yes | Yes | Yes |
| Adjustable Intensity | Yes | Yes | Yes | Yes | Yes |
| Adjustable Speed | Yes | Yes | Yes | Yes | Yes |
| Auto Pre-Programs | 6 | 23 | 8 | 16 | 13 |
| Manual Techniques | 6 | 5 | 4 | 6 | -- |
| Zero Gravity | Yes | Yes | Yes | Yes | Yes |
| Heat | Yes | Yes | Yes | Yes | Yes |
| Stretch Function | Yes | Yes | Yes | Yes | Yes |
| Foot Massage | Yes (rollers + airbags) | Yes (rollers + airbags) | Yes (rollers + airbags) | Yes (rollers + airbags) | Yes (rollers + airbags) |
| Calf Massage | Yes (airbags) | Yes (rollers + airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) |
| Hip/Waist Air Bag Massage | Yes (airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) |
| Upper Arm-Shoulder Massage | Yes (airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) |
| Arm Massage | Yes (airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) | Yes (airbags) |
| Neck-Head Massage | Yes | Yes | Yes | Yes | Yes |
| Spot Massage | Yes | Yes | Yes | Yes | -- |
| Deep Tissue | Yes | Yes | Yes | Yes | -- |
| Body Scan | Yes | Yes | Yes | Yes | Yes |
| Inversion Therapy | No | No | No | No | No |
| Chromotherapy | Yes | No | No | No | No |
| Vibration | Yes | No | No | No | No |
| User Memory | No | Yes | No | No | -- |
| Control With Mobile App | No | No | Yes | No | Yes |
| Timer | 5-30 Mins | 15 Mins | 15 Mins | 5-30 Mins | 5-30 Mins |
| Pause Function | Yes | Yes | Yes | Yes | Yes |
| Leg Length Adjustment | Motorized | Spring Loaded | Motorized | Spring Loaded | Motorized |
| Remote | Yes, Wired | Yes, Wired | Yes, Wired | Yes, Wired | Yes, Wired |
| Rocking Technology | No | No | No | No | No |
| Number of Airbags | 38 | 24 | 32 | 24 | -- |
| Bluetooth Speakers | No | Yes | Yes | Yes | Yes |
| Suggested User Height | 5' 2" - 6'4" | 5'-6'5" | 5'-6'5" | 5'2"-6'3" | -- |
| Max User Weight | 260 lbs | 260 lbs | 260 lbs | 260 lbs | -- |
| Dimensions Upright (L x W x H) | 58.3"L x 35.4"W x 48"H | 63" L x 30" W x 46.5" H | 59.1" L x 28.0" W x 47.2" H | 64.2" L x 30.7" W x 50" H | 63.8"L x 35.2" W x 49.2"L |
| Dimensions Reclined (L x W x H) | 74.8"L x 35.4"W x 45.3"H | 72" L x 30" W x 46.5" H | 70.1" W x 28.0" L x 38.6" H | 74.8" W x 30.7" L x 40.6" H | 77.0"L x 35.2" W x 38.8" H |
| Chair Weight | 255 lbs | 311 lbs | 240.6 lbs | 239 lbs | 220 lbs |
| Manufacturer Origin | China | China | China | China | China |
| Buy Now | Buy Now | Buy Now | Buy Now | Buy Now |