Osaki 4D Aeris Duo Massage Chair

Name: Osaki 4D Aeris Duo Massage Chair
Brand: Osaki
SKU: OSAKI-AERIS-BL
Price: 4499.0 USD
Availability: InStock

by Osaki

Save 36%

$6,999.00

$6,999.00 - $6,999.00

$6,999.00

$4,499.00

$4,499.00 - $4,499.00

$4,499.00

✓ Authorized Osaki Dealer
✓ Lowest Price Guaranteed
✓ FREE & FAST Shipping: In Stock and Ready to Ship
✓ Questions? Call an RFA Team Member: 1-855-864-6442

Quantity

Osaki | Model RT5951F

Osaki 4D Aeris Duo Massage Chair

The Aeris Duo runs two massage mechanisms at the same time on a single 1431 mm SL track. The upper mechanism is 4D: a four-ball head on a nylon fiberglass curved arm, with its own walking, kneading and tapping motors, an independent radial pump, a soft-touch airbag behind a hard curved arm, and 60 mm of protrusion. It covers 840 mm of the track. The lower mechanism is 2D and works the waist and hips, with a four-ball head on a fiberglass spring curved arm and synchronous kneading and walking motors, covering 830 mm. Their ranges overlap by 360 mm.

Around that track sit 44 airbags on 7 valves: 12 at the feet, 8 at the legs, 16 across the arms, 4 at the hip sides and 4 at the shoulders. The waist carries two 370 × 120 mm carbon fiber heating elements with three levels, and an air cooling circuit with three levels of airflow. Twelve auto programs sit in four categories at three intensities, with six manual techniques underneath them, and everything is driven from a 7 inch touchscreen controller, armrest quick buttons or voice. The chair ships in Black, Brown and Taupe.

Two mechanisms running at once Waist air cooling, 3 levels 12 programs, 6 manual techniques 50 ms anti-pinch response

Osaki 4D Aeris Duo massage chair in black

Inside the chair

What the Specification Actually Says

Osaki call the Aeris Duo a market disruptor. Here is the build underneath that: two mechanisms on one track, 44 independently fed airbags, a heated and cooled waist section, and a safety system that reacts in 50 ms.

⚙

Two Mechanisms, One Track

The 4D upper mechanism and the 2D waist and hip mechanism run at the same time on one 1431 mm SL track. The upper unit covers 840 mm, the lower covers 830 mm, and the two working ranges share 360 mm of track. The 4D unit has five intensity levels; massage speed runs across six.

360 mm overlap

💨

44 Airbags on 7 Valves

Twelve airbags at the feet, eight at the legs, sixteen across the arms, four at the hip sides and four at the shoulders. Osaki inflate each airbag from its own dedicated air supply, and they say that a dedicated feed per airbag produces faster inflation and stronger pressure than one feed shared across a group.

12 + 8 + 16 + 4 + 4

🌡

Waist Heat and Waist Cooling

Two 370 × 120 mm carbon fiber elements heat the waist across three adjustable levels. A separate air cooling circuit moves air through the same section at three levels of airflow. Osaki frame the pair seasonally: cooling in summer, heat in autumn and winter.

3 levels each

🛡

Anti-Pinch Detection

Three points are monitored: the control box, the calf rests, and the gap where the calf section meets the seat frame. Detection is capacitive, plus an infrared dual-beam at the legrest and seat frame. Response time is 50 ms. Overheat protection runs alongside it.

50 ms response

The numbers

Eight Things the Aeris Duo Is Built With

Every figure below is Osaki's published specification for model RT5951F.

⚙

Two mechanisms, one track

4D upper, 2D lower

📏

1431 mm of SL track

Seven segments, seven zones

💨

44 airbags on 7 valves

Dedicated air supply each

🌡

Waist heat at three levels

Two 370 × 120 mm elements

❄

Waist cooling at three levels

Air cooling circuit

📱

12 programs in 4 categories

Three intensity levels

🦵

Legrest extends 130 mm

16.5 to 89 degrees

🛡

50 ms anti-pinch response

Capacitive and infrared

Closer look

Three Parts of the Chair Worth Reading About

Osaki 4D Aeris Duo massage chair footrest and leg system

Leg and foot

A 360 Degree Leg and Foot System

The lower half of the chair is a separate machine from the track. Calves get kneading, rubbing and scraping from triple-row rollers with airbags on both sides. The soles get three-disc scraping that alternates forward and reverse, with airbags on both sides of the feet. The whole assembly extends itself 130 mm forward and back to meet different leg lengths, and the angle adjusts across a range of 16.5 to 89 degrees.

Automatic forward and backward extension of 130 mm
Adjustable legrest angle from 16.5 to 89 degrees
Triple-row rollers for calf kneading, rubbing and scraping
Three-disc sole scraping, alternating forward and reverse
Twelve airbags at the feet, eight at the legs

130 mm extension 16.5° to 89° 360 degree system

Ankles

Two-Direction Ankle Twisting

The ankle mechanism twists in two directions, working independently of the calf rollers and the sole discs above and below it. It sits inside the same legrest that extends 130 mm and swings through 16.5 to 89 degrees, so the moving parts around the ankle are the ones Osaki guard most closely: the calf rests and the calf-to-seat-frame gap both carry anti-pinch detection, capacitive at the calf rests and infrared dual-beam at the legrest and seat frame, with a 50 ms response.

Two-direction twisting massage for the ankles
Anti-pinch at the calf rests and the calf-to-seat frame gap
Capacitive detection plus infrared dual-beam
50 ms response time

Two directions 50 ms anti-pinch

Position

Two Zero Gravity Settings, 131 to 156 Degrees

The backrest holds two stored zero gravity positions between 131 and 156 degrees, so the shallower and the deeper recline are both one button away. One Touch Rocking moves the whole frame. Before a program starts, the chair scans the body to place the shoulder position, and that position can then be nudged by hand from the controller. Reclined, the chair occupies 2050 mm front to back and stands 830 mm tall, which is roughly 80.7 in by 32.7 in.

Two zero gravity settings, backrest 131 to 156 degrees
One Touch Rocking
Auto body scanning with manual shoulder fine-tuning
Upright footprint 1650 (D) × 770 (W) × 1150 (H) mm
Reclined footprint 2050 (D) × 770 (W) × 830 (H) mm

131° to 156° One Touch Rocking Auto body scan

Compare

Three Osaki 4D Chairs

All three run a 4D mechanism on an SL track with heat and zero gravity. What separates the Aeris Duo is the second mechanism working the waist and hips at the same time as the first, and an air cooling circuit at the waist.

You're Here

Osaki 4D Aeris Duo

Two mechanisms running at once on one track, with waist heat and waist cooling.

4D upper, 2D lower 1431 mm SL track 44 airbags, 7 valves Waist cooling, 3 levels

Currently viewing

Osaki 4D Yoga Flex

A single 4D mechanism on an SL track, with heat and zero gravity.

4D mechanism SL track Heat Zero gravity

Shop the Osaki 4D Yoga Flex

Osaki 4D Pro Maestro LE 2.0

Osaki's Pro Maestro line, also 4D on an SL track with heat and zero gravity.

4D mechanism SL track Heat Zero gravity

Shop the Osaki 4D Pro Maestro LE 2.0

Questions

Frequently Asked Questions

No. The upper mechanism is 4D and the lower mechanism is 2D. Osaki's sell sheet groups them under the name "4D Dual Mechanism", so it is worth being exact: the 4D unit is a four-ball head on a nylon fiberglass curved arm with separate walking, kneading and tapping motors, an independent radial pump and 60 mm of protrusion, running across five intensity levels. The 2D unit is a four-ball head on a fiberglass spring curved arm with synchronous kneading and walking motors, built for the waist and hips. The genuinely unusual part is that both mechanisms run at the same time on one track.

The upper mechanism covers 840 mm of the 1431 mm track and the lower covers 830 mm. Added together that is 1670 mm across a 1431 mm track, so the two working ranges share 360 mm. That shared band sits over the waist and lower back, where the 4D head and the 2D waist-and-hip head can both reach.

44 airbags on 7 valves: 12 at the feet, 8 at the legs, 16 across the arms, 4 at the hip sides and 4 at the shoulders. Osaki state that each airbag is inflated independently from a dedicated air supply, and that this gives faster inflation and stronger pressure than a system that inflates several airbags from one feed.

Yes, and they are two separate systems. Heat comes from two 370 × 120 mm carbon fiber elements with three adjustable levels. Cooling is an air cooling circuit with three adjustable levels of airflow through the same waist section. Osaki describe the split by season: cooling in summer, heat in autumn and winter. Heat at the waist is common at this size of chair; active air cooling is not.

Twelve auto programs in four categories, each running at three intensity levels. Peak: Power Stretch, Energize, Tranquil Massage. Recovery: Deep Tissue, Clear Mind, Refresh. Posture: Upper Body, Back & Spine, Lower Body. Schedule: Wake Up, Power Nap, Sleep Mode. Those are the program names as Osaki ship them.

Six manual techniques: Kneading, Tapping, Sync, Shiatsu, Knocking and Deep Shiatsu. On top of those you set 4D intensity across five levels and massage speed across six, choose the zone, and adjust the shoulder position by hand after the body scan.

The legrest extends itself forward and back by 130 mm, and its angle adjusts from 16.5 to 89 degrees. Inside it, the calves get triple-row rollers for kneading, rubbing and scraping, the soles get three-disc scraping that alternates forward and reverse, and airbags sit on both sides of the calves and both sides of the feet.

There are two zero gravity settings, with the backrest between 131 and 156 degrees. One button takes the chair to either. One Touch Rocking moves the frame separately from the recline.

Osaki publish it in millimetres. Upright: 1650 (D) × 770 (W) × 1150 (H) mm. Reclined: 2050 (D) × 770 (W) × 830 (H) mm. Converted approximately, that is about 65 × 30.3 × 45.3 in upright and about 80.7 × 30.3 × 32.7 in reclined. Those inch figures are conversions of Osaki's metric specification, not separately published numbers, so treat them as approximate when you measure a room.

Net weight is 99.3 kg and gross weight, crated, is 119 kg. Converted approximately, that is about 219 lb net and about 262 lb in the crate. The pound figures are again conversions of the kilogram specification, so treat them as approximate. Plan the delivery route around the crated figure.

Three ways: a 7 inch touchscreen controller, quick buttons on the armrest, and voice control. The voice command set covers all twelve programs plus pause, continue and power off. Built into the chair are wireless Bluetooth stereo speakers on the left and right, a wireless charger and a USB charger. The chair gives voice prompts and resets itself automatically when a massage finishes.

It runs an auto body scan to find the shoulder position, which you can then fine-tune by hand. Shoulder detection is dual: a Hall sensor plus microcurrent detection. Osaki also describe a health detection module that reads fatigue, heart rate and blood oxygen and selects a program from those readings; it is a chair feature for choosing a program and the Aeris Duo is not a medical device.

Anti-pinch detection covers three points: the control box, the calf rests, and the gap where the calf section meets the seat frame. Two methods are used, capacitive and an infrared dual-beam at the legrest and seat frame, with a 50 ms response time. Overheat protection runs alongside them.

The chair is finished in durable, water-resistant PU leather and operates on 110–220 V.

Model: RT5951F
Track: 1431 mm SL, seven segments, seven zones
Upper mechanism coverage: 840 mm, 4D
Lower mechanism coverage: 830 mm, 2D
Mechanism overlap: 360 mm
Airbags: 44, on 7 valves
Auto programs: 12, in 4 categories, at 3 intensity levels
Manual techniques: 6 - kneading, tapping, sync, shiatsu, knocking, deep shiatsu
Zero gravity: 2 settings, backrest 131 to 156 degrees
Waist heat: Carbon fiber, 3 levels, two elements at 370 x 120 mm
Waist cooling: 3 levels of airflow
Legrest extension: 130 mm
Legrest angle: 16.5 to 89 degrees
Anti-pinch: Capacitive and infrared dual-beam, 50 ms response
Upright dimensions: 1650 (D) x 770 (W) x 1150 (H) mm, roughly 65 x 30.3 x 45.3 in
Reclined dimensions: 2050 (D) x 770 (W) x 830 (H) mm, roughly 80.7 x 30.3 x 32.7 in
Net weight: 99.3 kg, roughly 219 lb
Gross weight: 119 kg, roughly 262 lb
Voltage: 110 to 220 V
Upholstery: Water-resistant PU leather
Colours: Black, Brown, Taupe

Dual mechanism: A 4D upper mechanism and a 2D waist-and-hip lower mechanism run at the same time on one track
Upper mechanism: 4D, four-ball head on a nylon fiberglass curved arm, covering 840 mm, with a 60 mm protrusion
Lower mechanism: 2D, four-ball head on a fiberglass spring curved arm with a synchronous kneading and walking motor, covering 830 mm
Track: 1431 mm seven-segment SL track across head, neck, shoulders, back, waist, hips and legs, with 360 mm where the two mechanisms overlap
Intensity: 5 levels of 4D intensity and 6 levels of massage speed
Airbags: 44 in total on 7 valves, each inflated independently
Waist heat: Carbon fiber elements, two at 370 x 120 mm, with 3 levels
Waist cooling: Air cooling at the waist with 3 levels of airflow
Legrest: 130 mm of automatic forward and backward extension, adjustable from 16.5 to 89 degrees
Foot and calf: Two-direction ankle twisting, calf kneading, rubbing and scraping on triple-row rollers, and three-disc scraping under the soles
Position: Two zero gravity settings between 131 and 156 degrees, plus one-touch rocking
Control: A 7 inch touchscreen controller, armrest quick buttons and voice control

Chair: Osaki 4D Aeris Duo in the colour selected
Controller: 7 inch touchscreen hand controller
On-chair controls: Armrest quick buttons and voice control
Audio: Wireless Bluetooth stereo speakers, left and right
Charging: Wireless charger and USB charger built into the chair

3 Year Standard Manufacturer's / Parts & Labor Warranty

This NON-TRANSFERRABLE Warranty is provided by Titan Chair LLC.

We 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, 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 year at no cost to the customer.
This warranty includes parts costs covered for the second year at no cost to the customer.
Structural Framework on selected products carries for three (3) years.
The additional extended warranties includes parts and labor costs covered at no cost to the customer.

What Is NOT Covered*:

Any shipping expenses incurred. Transportation damage; theft; abuse; neglect; vandalism.
Damages incurred due to shipping and handling, dropped products, improper installation, and/or unauthorized repairs do not constitute a defect under this warranty.
Modifications or altered conditions of the original product, improper use of electrical/power supplies, electrical disturbances and power surges.
Malfunctions due to improper use as well as unreasonable use or maintenance including failure to follow operating instructions.
Any environmental conditions (examples: fire, floods, rust, corrosion, sand, dirt, windstorms, hail, earthquakes, and/or tornados) or any other exposure to weather conditions.
This warranty does not include normal wear and tear including velcro or zipper malfunction, or tears in any fabric covering by abuse. Failures or attached points in stitching, Velcro, and zippers do not constitute as a defect for warranty.
Softening/ hardening of foams and filling composites in pillows and pads; Fading, wear, and pilling of fabrics does not constitute a defect under this warranty as those items naturally change with use.
Natural patterns and grains and variations in leather will not constitute as a defect under this warranty, as no two pieces of fabric are identical.
The warranty shall not apply if the product has been damaged physically, whether intentionally or due accident or neglect: including stains, fluids, mold, water damage, animal damage, cuts, burns or is otherwise unsanitary, damaged or soiled.
Products used in commercial or corporate settings.
Products purchased from unauthorized dealers.
Under this warranty, if a product is determined to be unfixable and requires replacement, the customer is responsible for placing the chair in the garage or another accessible location for the driver to pick up. The returned item must be properly packaged; otherwise, the agent will not be able to pick it up. Upon delivery, the delivery agent will place the chair in the driveway or the nearest accessible area, such as the garage.

Implied Warranty & Other Damages:

Any implied warranties shall be limited to the duration of the 1 year portion of this limited warranty, and with regard to structural framework, limited to the duration of the 3 year portion of this limited warranty.
By making a purchase, you agree that Titan Chair LLC. will not be liable for any items damaged and/or lost while en route to the specified address. Any claims for such loss or damage must be addressed and resolved with the designated carrier.
In no case will Titan Chair LLC. be liable for incidental or consequential damages, whether such damages are claimed on account of breach of warranty, breach of contract, negligence or strict/product liability, including without limitation, damage to property (other than the product) or other economic losses.

How to obtain warranty service:

You must provide proof of purchase for any warranty claim.
You must obtain a return authorization number in order to ship products to a service center.
You may obtain service advice, or an RMA number by contacting the Titan Chair LLC Customer Service department toll-free at 1-888-848-2630 ext.3.
This warranty gives you specific legal rights. You may also have other rights that vary from state to state.

Titan Chair, LLC Warranty Limitations and Exclusions

Warranties are non-transferable, and do not cover any damage or loss caused by: use in a commercial or corporate setting; failure to follow operating instructions; Electrical disturbances and power surges; dropped product; including but not limited to remote controls; Damage resulting from improper use or maintenance; vandalism; environmental conditions; exposure to environmental conditions (rust, corrosion, sand, dirt, wind, hail, earthquake, tornado, fire, flood); loss of use during the period that the product is being repaired; products purchased from unauthorized resellers; alterations or modifications of original condition; theft; neglect; unauthorized repairs; loss of power.
Damage that occurred due to shipping and handling does not constitute a defect under this warranty. Fading, wearing, and the pilling of fabrics does not constitute a defect under the warranty. Failures of attach points such as stitching, Velcro, and zippers do not constitute a defect under this warranty. Under no circumstance shall Titan Chair, LLC or its representatives be liable for indirect, consequential, or incidental damages (including damages for lost profits, business interruption, bodily injury, medical, etc.), even if any party has been advised of the possibility of such damages.
Warranties are only valid within the 48 contiguous United States and Canada, provided the equipment has been operated according to the instructions accompanying it. All warranties begin on the DATE OF PURCHASE. Titan Chair, LLC, at its sole discretion, will repair or replace any defective part within a reasonable time frame.

Free Curbside Delivery – Average Shipping Time 7-10 Days

Curbside Delivery ships via Freight to the 48 contiguous states. The freight company will deliver your massage chair to a carport or first-floor entryway. Please check the box dimensions and ensure it will fit through your doorway. Assembly is required and can take 30-90 minutes, depending on the chair.

Threshold Delivery – Average Shipping Time 7-10 Days

Threshold Delivery ships via Freight to the 48 contiguous states. The freight company will deliver your massage chair inside your home (no stairs) just inside the doorway. Please check the box dimensions and ensure it will fit through your doorway. Assembly is required and can take 30-90 minutes, depending on the chair.

White Glove Delivery – Average shipping time 10-16 Days

In-Home Delivery and Assembly is the same as White Glove Delivery. Your massage chair will be shipped via Freight to the White Glove Delivery warehouse. They will contact you to schedule a delivery time and date when they receive your order.

The White Glove Delivery team consists of a two person installation team that will deliver (up to 2 flights of stairs), unpack, and install your massage chair in your room of choice. These are not professional massage chair installation experts but a furniture installation team. They may or may not have installed your massage chair model before.two-person