- Year 1: In-home service, parts, and labor
- Years 2–3: Replacement parts only
Osaki Grand Duo – Dual-Mechanism 4D Massage with A.I. Precision
Experience the future of full-body wellness with the Osaki Grand Duo, a premium massage chair designed to deliver personalized relaxation like never before. Featuring advanced 4D Dual-Mechanism Technology, this innovative chair provides simultaneous upper and lower body massages, combining deep-tissue relief for the back and neck with soothing care for the glutes and hamstrings.
The Grand Duo is equipped with A.I. Health Monitoring, using fingertip sensors to track vital health metrics such as heart rate, blood oxygen levels, microcirculation, and fatigue. Based on real-time feedback, the chair intelligently selects from 41 expertly crafted massage programs, ensuring each session is tailored to your body’s unique needs.
With its extended 53" SL-Track, the Grand Duo follows the natural curves of your spine, delivering consistent pressure from the neck to the hamstrings. Enhanced with Zero Gravity Reclining and Space Saving Technology, this chair offers a near-weightless experience while requiring only 1 inch of clearance from the wall.
The Osaki Grand Duo takes personalized relaxation to the next level with its advanced A.I. health sensor, discreetly embedded at the front of the armrest. This intelligent sensor detects hidden tension throughout your back with remarkable precision. As it gathers real-time data from your fingertips, the chair automatically selects the most suitable massage from 41 expertly crafted programs, focusing on the areas that need it most. Every movement is thoughtfully designed to ease stress and deliver a truly customized, full-body relaxation experience.
The Grand Duo invites you to immerse yourself in the ultimate dual-mechanism massage experience, simultaneously soothing your glutes and hamstrings while providing deep tissue relief along your back and neck. Equipped with advanced 4D technology for both the upper and lower body, this chair delivers an incredibly lifelike, human-like massage that surpasses traditional designs. Every element has been meticulously engineered to create a true 4D + 4D experience — one that not only rejuvenates your body but awakens your senses. Feel the difference and discover the thoughtful craftsmanship woven into every inch of this innovative chair.
The Osaki Grand Duo intelligently maps the unique contours of your body with its advanced smart body scan, ensuring every curve — from your neck to your glutes — receives precisely targeted pressure. No area is overlooked, as the chair’s meticulous design envelops you in full-body care. Every moment is thoughtfully calibrated to deliver the most effective, personalized massage experience possible.
The advanced A.I. health detector continuously monitors your heart rate, blood oxygen levels, microcirculation, and fatigue, intuitively identifying where your body holds tension and needs the deepest relief. In A.I. mode, the chair intelligently crafts a personalized massage experience, adapting in real time to your body’s unique needs and delivering targeted care designed to dissolve stress with precision and intention. Every movement is tailored, every moment engineered to elevate your state of relaxation to new heights.
The Osaki Grand Duo offers effortless convenience with its built-in voice command system, allowing you to control the chair completely hands-free. With just a simple phrase, you can adjust your massage settings without interrupting your relaxation. A full list of voice commands and instructions is easily accessible through the remote menu, making it simple to operate all of the chair’s essential functions.
The Osaki Grand Duo elevates your relaxation with its luxurious Zero Gravity recline, gently positioning your body in a state of near-weightlessness to ease spinal pressure and promote deep relaxation. Designed with Osaki’s Space Saving Technology, this chair achieves a full, graceful recline while needing only 1 inch of clearance from the wall — seamlessly blending premium comfort with space-conscious design.
The Osaki Grand Duo features an extended 53-inch SL-Track, thoughtfully designed to follow the natural curve of your spine. This generous range begins at the neck and continues through the glutes, reaching the top of the hamstrings to deliver a seamless, deeply consistent massage that soothes the entire body.
The Osaki Grand Duo redefines accessibility with its elegant sliding side panel design, allowing you to enter and exit the chair with ease and comfort. A simple press of a button glides the side panel back, offering effortless access — an ideal solution for individuals with back discomfort, limited mobility, arthritis, or joint pain. This thoughtful feature ensures every moment of relaxation begins seamlessly.
The Osaki Grand Duo is designed to adapt to your body with its extendable legrest, which effortlessly extends up to 7 inches at the touch of a button. This thoughtful feature comfortably accommodates users of varying heights, supporting individuals up to 6'3" tall for a truly tailored, full-body massage experience.
The Osaki Grand Duo envelops you in luxurious, full-body care with 62 strategically placed airbags, delivering progressive, layered compression from head to toe. The arm and palm airbags are thoughtfully segmented into three zones, creating a gentle, wave-like kneading and pressing motion that soothes tension and enhances circulation with every touch.
The A.I. Grand Duo indulges your senses with its thoughtfully designed, targeted heat functions, elevating every massage to a new level of relaxation. As gentle warmth radiates through your body, it effortlessly melts away muscle tension, perfectly enhancing the soothing pressure of the rollers and air compression. The versatile heated Shawl can be draped over your chest or left along the back, enveloping you in a subtle, comforting heat. This warming touch not only loosens your muscles but heightens your sense of calm, guiding you into deeper relaxation with every breath. The Grand Duo transforms each moment into pure serenity.
The Osaki Grand Duo pampers your lower body with its comprehensive calf massage system, combining soothing outer calf kneading with the gentle compression of 8 strategically placed airbags and the precision of 2 dedicated calf rollers. This harmonious blend of techniques creates a uniquely relaxing experience, melting away tension and revitalizing tired legs with every movement.
The Osaki Grand Duo treats your feet to a rejuvenating, spa-like experience with its combination of 16 expertly positioned airbags and 4 precision rollers. This thoughtful design targets the sides, soles, and backs of your feet, as well as the Achilles tendon, delivering soothing, targeted relief exactly where you need it most. Every detail is crafted to melt away tension and leave your feet feeling refreshed and revitalized.
The Osaki Grand Duo surrounds you with a soothing, ambient glow through its Chromotherapy LED lighting system. Soft, radiant colors gently illuminate your space, transforming the atmosphere and enhancing your sense of relaxation. With a spectrum of hues to choose from, you can effortlessly set the perfect mood for tranquility, balance, and pure bliss.
The Osaki Grand Duo enhances your environment with its built-in Negative Ionizer, quietly working in the background to purify the air around you. By binding to dust, pollen, and pet dander, it helps create a fresher, more inviting space — allowing you to fully relax and breathe easier as you unwind in complete comfort.
The Osaki Grand Duo invites you to elevate your relaxation with its built-in Bluetooth Speakers, surrounding you with the soothing melodies of your favorite music or the immersive storytelling of an audiobook. Let your mind drift as your body unwinds, creating a harmonious escape where sound and comfort blend seamlessly.
Elevate your relaxation with the art of Aromatherapy, as delicate, carefully chosen fragrances drift through the air, awakening your senses and guiding you into a deeper state of tranquility. The Osaki Grand Duo transforms your massage experience into a complete sensory escape, where soothing scents and personalized comfort intertwine.
The Osaki Grand Duo is designed with thoughtfully placed Quick Side Control Panels along the armrests, allowing you to effortlessly adjust your massage without interrupting your relaxation. With intuitive access at your fingertips, every setting is just a touch away, enhancing convenience and ensuring a seamless, personalized experience.
The Osaki Grand Duo is designed with thoughtfully placed Quick Side Control Panels along the armrests, allowing you to effortlessly adjust your massage The Osaki Grand Duo enhances your experience with modern convenience, featuring an integrated wireless charger and USB port. Effortlessly recharge your devices while you unwind, ensuring you stay connected and powered up — all without ever leaving your state of relaxation.
Specifications
DIMENSIONS


| Power Supply | 110 - 120V |
|---|---|
| Rate Frequency | 50 / 60Hz |
| Chair Dimensions (W x L x H) - Upright | 33.5" x 65.7" x 48.5" |
| Chair Dimensions (W x L x H) - Reclined | 33.5" x 70.9" x 34.6" |
| Chair Weight | 332.3 lb |
| Width - Shoulder | 24.5" |
| Width - Seat | 21.0" |
| Minimum Door Width | 33.5" |
| User Maximum Weight | 280 lb |
| Package Dimensions (W x L x H) - Box 1 | 33.5" x 50.2" x 51.4" |
| Package Dimensions (W x L x H) - Box 2 | 16.9" x 29.6" x 41.8" |
| Package Weight - Box 1 | 340.6 lb |
| Package Weight - Box 2 | 56.0 lb |
Osaki Massage Chair Warranty
Osaki massage chairs are covered against defects in materials and workmanship under normal residential use. Coverage begins on the original purchase date and applies only to the original purchaser.
Warranty Coverage
- Years 1–3: In-home service, parts, and labor
- Years 4–5: Replacement parts only
Warranty coverage varies by model. Please refer to the product specifications to confirm whether the chair includes the 3-year or 5-year limited warranty.
What Is Not Covered
- Physical, accidental, or cosmetic damage
- Commercial, corporate, rental, or institutional use
- Misuse, neglect, improper maintenance, or failure to follow instructions
- Unauthorized repairs, alterations, or modifications
- Electrical disturbances, power surges, or loss of power
- Environmental damage, including rust, corrosion, fire, flood, wind, hail, earthquake, or tornado
- Shipping or handling damage
- Normal wear, including fading, fabric pilling, stitching, Velcro, and zippers
- Products purchased from unauthorized resellers
Osaki warranties are non-transferable and apply only to the original purchaser. Loss of use while the product is being inspected or repaired is not covered.
Need Warranty Service?
Contact TITTAC Customer Support with your order number and a description of the issue. Photos or videos may be requested to assist with diagnosis. Our team will help coordinate the appropriate warranty service with Osaki.
Shipping, Exchanges & Returns
Review the delivery options, inspection requirements, and 30-day exchange and return terms for TITTAC massage chairs.
Free Curbside Freight Delivery
Massage chairs include free curbside freight delivery to the 48 contiguous United States. Delivery is generally estimated at 7 to 10 days, but timing may vary by product availability, destination, and freight carrier schedule.
Curbside delivery is made to the curb, driveway, or nearest safe exterior location accessible by the freight truck.
- Moving the chair inside the home
- Stairs, upper floors, or room placement
- Unpacking or assembly
- Removal of boxes and packaging materials
The customer is responsible for arranging sufficient help and equipment to move the chair from the delivery location into the home.
White Glove Delivery
White Glove Delivery is available for an additional charge. Pricing and included services vary by chair model, delivery address, and local service provider.
- The chair is delivered through a local delivery and assembly provider
- The provider contacts the customer to arrange an appointment
- In-home delivery and assembly are provided according to the confirmed service level
- Stairs, room placement, unpacking, and packaging removal must be confirmed in advance
White Glove Delivery generally adds 7 to 10 days to the regular delivery estimate. All White Glove charges are non-refundable once the service has been arranged.
Alaska & Hawaii
Free shipping does not apply to Alaska or Hawaii. Please contact TITTAC before ordering to confirm available delivery options and receive a freight quote.
Inspect Your Delivery
Inspect the packaging and visible condition of the chair before signing the delivery receipt.
- Note all visible damage clearly on the delivery receipt
- Take photos of the packaging, shipping labels, damage, and receipt
- Contact TITTAC as soon as possible
- For severe damage, contact TITTAC before refusing delivery whenever possible
Signing without a damage notation may limit the ability to file a successful freight claim. Concealed damage or functional issues discovered after unpacking should be reported promptly.
30-Day Exchanges & Returns
A massage chair may be requested for exchange or return within 30 days from the purchase date. TITTAC approval and return instructions are required before the chair is shipped back.
Return for a Refund
- The customer is responsible for the original outbound freight cost
- The customer is responsible for return freight
- Applicable freight charges will be deducted from the refund
- White Glove Delivery charges are non-refundable
Exchange for Another Chair
- Price differences are adjusted according to the replacement chair
- Applicable freight charges are the customer's responsibility
- Higher- and lower-priced exchanges may have different freight treatment
- White Glove service for a replacement chair is charged separately
Returned chairs must be securely packaged for freight transport. The customer is responsible for damage caused by improper return packaging.
Refused or Undeliverable Shipments
Customers may be responsible for outbound freight, return freight, redelivery, storage, and any White Glove charges already incurred when delivery is refused without approval, an appointment is missed, or an incorrect or incomplete address is provided.
Questions About Delivery or Returns?
Contact TITTAC for White Glove pricing, Alaska or Hawaii freight quotes, delivery damage assistance, and exchange or return authorization.
Write your own review
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Osaki DuoMax.....great chair, great customer
We were looking for a massage chair after returning a previous purchase (from another company) that just didn’t quite fit our needs. After speaking with Toan from Tittac, we knew we were in good hands. He was extremely helpful, patiently listened to our needs, and helped us narrow down our choices until we selected the Osaki DuoMax.
We’ve had the chair for a while now, and it’s truly fantastic—we’re very happy with it! Plus, Toan personally followed up after delivery to ensure everything was perfect, which further confirmed our impression of Tittac’s exceptional customer service. Thank you so much, Toan and the entire Tittac team!
Highly recommend this business if you’re looking for quality massage chairs and reliable service.