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Osaki Grand Duo AI Series 4D+4D Massage Chair

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Original price $14,999.00 - Original price $15,249.00
Original price $14,999.00
$13,999.00
$13,999.00 - $14,249.00
Current Price $13,999.00
+ FREE SHIPPING
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Ships in ~ 7-10 business days
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Osaki AI Grand Duo 4D Dual Mechanism Massage Chair

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Craving the kind of relaxation that doesn’t just feel good—but feels personal? The Osaki AI Grand Duo delivers exactly that. It’s not just a massage chair—it’s an intelligent wellness system designed to read your body, adapt to your needs, and rejuvenate your mind, body, and soul.

With luxurious side-entry doors, dual 4D massage mechanisms, and 41 massage programs curated by AI, the Grand Duo turns everyday recovery into an extraordinary ritual.

This massage chair is for those who want more than comfort—it’s for those who want precision, elegance, and cutting-edge wellness at their fingertips. Advanced health scanning, an 8" wireless tablet, intelligent air compression, and heating therapy combine to create a fully immersive, tailored experience.

Add in smart features like voice control, aromatherapy, chromotherapy, and space-saving design, and you've got a chair that turns any room into a personal spa sanctuary.

Ideal for users who value technology, performance, and premium relaxation, the Grand Duo is the ultimate in intelligent massage innovation.

Grand Duo 4D+4D Features

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  • Dual 4D Massage Mechanism: Simultaneously targets your upper body and lower body with dual roller systems for deep, synchronized relief.
  • Intelligent AI Health Detection: Monitors your heart rate, blood oxygen, microcirculation, and fatigue to generate a massage custom-fit to your physical condition.
  • Smart Body Scan System: Accurately maps your body’s contours to ensure pressure is evenly and precisely applied across every zone.
  • 41 Auto Programs & 5 Manual Techniques: Choose from a wide range of programs like Sports Recovery, Thai Stretch, Swedish, Neck Stretch, Rejuvenation, and more.
  • 53" SL-Track System: Extends from neck to hamstrings, delivering consistent full-body relief aligned to the spine’s natural curve.
  • Zero Gravity Recline + 1" Wall Clearance: Achieve true weightlessness and full recline while saving space—only needs 1 inch from the wall.
  • 62 Air Cell Compression Massage: Advanced air massage with 3-segment armrest bags delivers smooth, wave-like compression throughout the body.
  • Sliding Side Entry Doors: Innovative panel doors allow easier access—perfect for seniors or those with mobility limitations.
  • Calf Kneading with 8 Airbags & 2 Rollers: Targets tension in the calves with precision—rotating, squeezing, and kneading for full relief.
  • 4 Foot Rollers + 16 Airbags: Covers the heel, sole, arch, and Achilles for an all-around foot massage unlike anything else.
  • Heating Therapy (Shawl, Back, Feet): Graphene-infused heat therapy enhances circulation and helps muscles recover faster with soothing warmth.
  • Aromatherapy + Chromotherapy LED Lighting: Breathe in calming scents and relax under ambient lighting that complements your mood and deepens the experience.
  • Voice Control: Operate your chair hands-free with simple voice commands for seamless adjustments.
  • Negative Ionizer: Cleans the surrounding air by capturing dust and allergens—improving air quality and overall relaxation.
  • 8" Wireless Tablet Controller: Rechargeable touchscreen lets you fine-tune every massage and tracks your health data with real-time feedback.
  • Quick Side Control Panel: Adjust settings instantly from the armrest without interrupting your session.
  • Auto Extendable Footrest (up to 7"): Accommodates users up to 6'3" with a footrest that adjusts to match your height.
  • Wireless Charging + USB Port: Stay connected and charged while you unwind.
  • Removable Pillow Headrest: Remove for a deeper upper-body massage or keep it for extra cushioning.
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41 Auto Massage Programs

Discover a wide range of expertly crafted programs designed to suit every mood, need, and moment of the day.

Full Body Programs

  • Gentle
  • Unwind
  • Stretch
  • Recovery
  • Meditation
  • Synchronized
  • Quick Demo

Focused Relief

  • Recharge
  • Sport Recovery
  • Office Relief
  • Fatigue Relief
  • Lower Body Relief
  • Neck & Shoulder
  • Upper Body / Lower Body

Calming & Daily Wellness

  • Relax
  • Vitality
  • Night Care
  • Morning Care
  • Midday Care

Point Massage

  • Back
  • Leg & Foot
  • Spinal Care
  • Neck Stretch
  • Waist & Glutes

International Techniques

  • Swedish Style
  • Hong Kong Style
  • Japanese Shiatsu
  • Thai Stretch
  • Korean Style

Personalized Experiences

  • Beach
  • Calm Zen
  • Tea House
  • Mobility
  • Spring Forest
  • Afternoon Garden

Healing & Circulation

  • Mobility
  • Revitalize
  • Rejuvenation
  • Upper Back Circulation

5 Manual Massage Programs

Take control of your comfort with these customizable manual techniques:

  • Kneading
  • Tapping
  • Knocking
  • Shiatsu
  • Kneading & Tapping

Osaki Grand Duo 4D+4D Massage Chair Specs

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  • Power Supply: 110 – 120V / 50 – 60Hz
  • Upright Dimensions: (W x L x H): 33.5" x 65.7" x 48.5"
  • Reclined Dimensions: (W x L x H): 33.5" x 70.9" x 34.6"
  • Chair Weight: 332.3 lb
  • Shoulder Width: 24.5"
  • Seat Width: 21.0"
  • Minimum Doorway Width: 33.5" (Assembled), 31.0" (Disassembled)
  • Max User Weight Capacity: 280 lb
  • Package Dimensions & Weight
    • Box 1: 33.5" x 50.2" x 51.4" (340.6 lb)
    • Box 2: 16.9" x 29.6" x 41.8" (56.0 lb)

Warranty: 5 Year (3 Years Full Service & Additional 2 Years Parts)

Osaki AI Grand Duo User Manual

Order Processing: Once you place your order, you'll receive an order confirmation email. Please allow 1-3 business days for processing. If there are any unexpected delays, we’ll reach out to you immediately.

Shipping Methods:

  • Standard Delivery: Massage chairs are delivered mostly, or sometimes 100% assembled via Freight truck shipment.
  • White-Glove Delivery: Professional delivery teams will bring the chair inside, place it where you like, and remove packaging (optional service).

Delivery Timeline:

  • Processing: Please allow 1-3 business days for us to process your order.
  • Handling Time: This product should ship out in 7-10 business days days from the time it is processed.
  • Transit Time: Once shipped, we will send you the tracking number. Standard ground shipments take 3-7 business days.

Receiving Your Shipment: Inspect your shipment for damage before signing the delivery receipt. If any issues arise, contact us within 2-3 business days.

Assembly & Setup:

Most massage chairs arrive partially or fully assembled. Some simple steps, like attaching the footrest or side panels, may be required at most.

Electrical Requirements:

  • Most massage chairs plug into a standard 110V home outlet. Exceptions to this will marked in the product details.
  • High-end models with stronger motors may require dedicated circuits (check product specifications).

Space Considerations: Some chairs require additional space for reclining, while others feature zero-clearance recline, allowing placement directly against a wall.

Professional Assembly: White-glove service is available for in-home delivery and setup.

Massage Chair Warranty Coverage:

Select Fitness is an authorized dealer for every massage chair we sell. All chairs include the manufacturer's original warranty.

Typical warranty coverage includes:

  • Frame & Structure: Covered for years.
  • Motors & Massage Mechanisms: Covered for years.
  • Electronics & Control Panels: -year warranty.
  • Upholstery & Padding: Covered for defects but does not include normal wear and tear.

For specifics on your chair’s warranty, check the product details or contact us for more information.

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Sauna Benefits Section
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Find the perfect massage chair for your space, needs, and budget—without compromising on quality.
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We offer top-tier massage chairs at the best prices possible—plus financing options to fit your budget.
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Sauna FAQ Section

Massage Chair FAQs

General Questions
Where should I put my massage chair? +
Massage chairs work best in living rooms, bedrooms, offices, or dedicated relaxation spaces. Many models feature zero-clearance reclining, meaning they can be placed just a few inches from a wall. Always check the product dimensions and clearance requirements before placing your chair.
Is there a maximum or minimum height requirement? +
Most massage chairs comfortably fit users between 5’0” and 6’4”, but it varies by model. Some premium chairs accommodate taller users, while compact models work best for shorter individuals. Always check the recommended height range on the product page.
Is there a max user weight? +
Most massage chairs support 250 to 330 lbs. Heavy-duty models can support up to 400+ lbs. Be sure to check the weight capacity on the product page to ensure the best fit.
How strong does the massage pressure go? +
Massage pressure varies by chair and can be adjusted to suit your comfort level.
- 2D Chairs: Moderate intensity (surface-level massage).
- 3D Chairs: Deeper tissue massage (adjustable depth).
- 4D Chairs: Most advanced—variable speed & depth for a lifelike massage.
What does zero gravity mean? +
Zero Gravity reclines the chair into a weightless position, reducing spinal pressure and enhancing the massage. Inspired by NASA, this position helps improve circulation and relieve tension.
Delivery & Setup
Can I move the chair once I get it in place? +
Massage chairs are heavy (some over 250 lbs), but most models include rear wheels for easier repositioning once set up.
Is assembly required? +
Most massage chairs arrive partially assembled. Typical setup involves attaching the footrest, side panels, and armrests—a simple process that usually takes 30-60 minutes. Some chairs arrive fully assembled.
How does it come delivered? +
- Standard Delivery: The chair arrives in a large box (or multiple boxes) and is delivered curbside.
- White-Glove Delivery: The chair is brought inside, assembled, and packaging is removed (available for an additional fee).
How much does a massage chair weigh? +
Massage chairs typically weigh between 150 to 300 lbs, depending on the model and features.
Safety & Performance
Are massage chairs safe? +
Yes, massage chairs are designed for safety, but users with certain medical conditions (such as pacemakers, recent surgeries, or pregnancy) should consult a doctor before use.
Do massage chairs help with recovery? +
Massage chairs can assist with muscle recovery, circulation, and relaxation by increasing blood flow and reducing muscle stiffness. While they’re not a medical treatment, many people use them for post-workout relief, back pain, and stress reduction.
What if I don’t like how my massage chair feels? +
Most massage chairs offer adjustable intensity and settings to customize your experience. If the chair feels too strong or too weak, adjust the air compression, roller depth, or recline position for a better fit.
How long does a massage chair last? +
High-quality massage chairs typically last 10+ years with proper care. Regular maintenance, such as keeping it clean and avoiding excessive weight beyond capacity, can extend its lifespan.
Does it plug into a normal wall outlet? +
Yes! Most massage chairs plug into a standard 110V household outlet. High-end commercial models may require a dedicated 220V circuit (check product details).
Need Some Help?

When You Work With Our Massage Chair Specialist, You Get:

  • Expert Guidance on Choosing the Right Massage Chair
  • Massage Chair Features & Sizing Assistance
  • Private Access to Exclusive Deals & Promotions
  • Delivery & White-Glove Assembly Support
  • Dedicated Account Representative for Personalized Support

A knowledgeable massage chair specialist will contact you to help you choose the perfect chair for your needs.

“From the first consultation to delivery, Select Fitness made buying my massage chair a seamless experience. The team answered all my questions, and now I get to enjoy the best part of my day—relaxing in my chair after work.”

- Liz E., 11/24
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