3-Year
Limited Warranty
- Year 1: In-home service, replacement parts, and labor
- Years 2–3: Replacement parts only
Osaki Somnus 4D Duoflex AI Massage Chair
Dual 4D massage, Sonic Pulse stimulation, heated rollers, and AI-assisted personalization in one premium chair
The Osaki Somnus 4D Duoflex AI is designed for customers who want an advanced, highly customizable massage experience. Its dual 4D mechanisms operate independently to vary depth, speed, and rhythm, while Sonic Pulse stimulation, heated rollers, a Flex SL-Track, 48 air cells, deep calf kneading, and specialized foot rollers create a layered full-body session.
With AI-assisted program recommendations, automatic body scanning, Zero Gravity recline, 3-inch wall clearance, a 7-inch touchscreen, quick controls, Monster Bluetooth speakers, chromotherapy lighting, USB-C charging, and wireless charging, the Somnus combines premium massage technology with everyday convenience.
Best for
Users who want a flagship-level chair with dual independent 4D mechanisms, Sonic Pulse massage, heated rollers, deep calf work, strong foot coverage, and extensive personalization features.
Massage feel
The Somnus delivers a deep, complex, and highly adjustable massage by combining two 4D mechanisms, Sonic Pulse stimulation, 48 air cells, heated contact, calf kneading, and six total foot rollers.
Room fit
This is a large, heavy chair measuring 32 inches wide and 79 inches long when reclined. It requires only about 3 inches of rear wall clearance, but the full delivery path must be measured carefully.
Key massage technologies
These are the main Somnus features customers should understand before choosing this chair.
AI-Assisted Sensor Scan
The Somnus uses a built-in sensor to collect wellness-related readings and help recommend a massage program for the current session. The goal is to simplify program selection and provide a more personalized massage experience.
- Collects readings related to heart rate, oxygen saturation, heart rate variability, microcirculation, and fatigue level.
- Uses the completed scan to help recommend a massage program.
- Designed for massage personalization only and not for medical diagnosis, monitoring, or treatment.
Dual 4D Mechanisms with Sonic Pulse Massage
Two independently controlled 4D massage mechanisms adjust roller depth, speed, and rhythm to target different areas at the same time. Sonic Pulse stimulation adds rapid pulsing action, while heated rollers provide gentle warmth during supported programs.
- Dual mechanisms can work across separate regions of the back and lower body.
- Adjustable 4D depth, speed, and rhythm create a more dynamic massage.
- Sonic Pulse stimulation and heated roller contact add extra layers of comfort.
Automatic Body Scan and Flex SL-Track
The automatic body scan maps the user’s shoulder position and body contours before massage begins. The flexible SL-Track follows the backrest as it changes position, helping maintain contact from the neck through the glutes and upper hamstrings.
- Helps align the massage mechanisms with the current user.
- Provides extended coverage from the neck toward the upper hamstrings.
- Flexes with the backrest to support continuous contact through different recline positions.
Zero Gravity with 3-Inch Wall Clearance
Zero Gravity positions the body in a supported recline during massage. Despite its large size, the space-saving base allows the Somnus to fully recline while placed approximately 3 inches from the wall.
- Supports a relaxed body position during selected programs.
- Requires approximately 3 inches of rear wall clearance.
- Measure the full 79-inch reclined length and surrounding walking space before installation.
48-Cell Full-Body Air Compression
Forty-eight strategically positioned air cells apply rhythmic compression around multiple body areas. This surrounding pressure works alongside the two 4D mechanisms to create a fuller massage experience.
- Provides broad air compression coverage across the body.
- Adds rhythmic holding and releasing pressure during supported programs.
- Complements the roller, heating, calf, and foot massage systems.
Heated Rollers, Lumbar, and Calf Warmth
The Somnus combines heated massage rollers with dedicated warming zones around the lower back and calves. The gentle heat is designed to complement roller movement and air compression and make the massage feel more comfortable.
- Heated roller contact adds warmth directly during selected massage patterns.
- Additional heating zones target the lumbar and calf areas.
- Manufacturer-listed temperature range is approximately 75–83°F.
Deep Calf Kneading and Six Foot Rollers
The lower-body system combines deep calf kneading with three specialized rollers under each foot. An automatic footrest extends up to 6 inches to improve fit for users with different leg lengths.
- Kneading action targets the calf area more directly than air compression alone.
- Six total foot rollers provide broad contact across both feet.
- Automatic extension helps accommodate different user heights and body proportions.
7-Inch Touchscreen and Quick Controls
The large touchscreen provides access to automatic programs, manual modes, recline, heat, air compression, and massage adjustments. A shortcut panel on the armrest keeps frequently used controls within easy reach.
- Large 7-inch touchscreen for program and setting navigation.
- Quick shortcut panel for recline, Zero Gravity, and other key functions.
- USB-C charging and a wireless charging surface for compatible devices.
Additional comfort and convenience features
These supporting features add flexibility, entertainment, and easier daily operation.
20 Automatic Programs
Programs include Morning Care, Midday Care, Night Care, Fatigue, Calm, Recover, Deep Tissue, Thai Stretch, Neck & Shoulder, Lumbar Care, Smart Care, Gentle, and other targeted routines.
12 Manual Modes
Manual techniques include Kneading, Shiatsu, Swedish, Tapping, Clapping, Rolling, Scraping, Pressing, Pointing, Soothing, Dialing, and Knocking.
Monster Quad Bluetooth Speakers
Four built-in speakers provide wireless audio for music, podcasts, audiobooks, or relaxing sounds from a compatible device.
Chromotherapy Lighting
Selectable lighting colors create a customizable visual atmosphere around the chair during use.
USB-C and Wireless Charging
Keep compatible devices powered through the USB-C port or armrest charging surface.
Quick Shortcut Panel
Frequently used position and Zero Gravity controls are available directly from the armrest panel.
Before you choose the Somnus
The Somnus is a large flagship chair weighing 269.1 lbs and measuring 79 inches long when fully reclined. Before ordering, confirm user fit, room size, doorway width, delivery access, warranty coverage, and setup requirements with Tittac.
- Measure the placement area in both upright and fully reclined positions.
- Confirm that the narrowest doorway and every turn can accommodate a 32-inch chair.
- Compare the 21-inch seat width and 25-inch shoulder width with the intended user.
- Ask Tittac about delivery, installation, warranty, and return details for your location.
Osaki Somnus 4D Duoflex AI FAQ
What does dual 4D mean on the Somnus?
The chair uses two independently controlled 4D massage mechanisms. Each can vary roller depth, speed, and rhythm while targeting different areas of the body.
Does the AI sensor diagnose health conditions?
No. The sensor is designed to support massage personalization and program recommendations. It is not a medical device and should not be used to diagnose, monitor, or treat a health condition.
How much wall clearance does the Somnus need?
The manufacturer lists approximately 3 inches of rear wall clearance. The chair reaches 79 inches long when fully reclined, so the complete placement area still needs to be measured.
How many foot rollers does the chair have?
The Somnus has three specialized rollers under each foot, for a total of six foot rollers.
How wide must the doorway be?
The listed minimum doorway width is 32 inches. Actual delivery clearance can vary depending on the frame, hinges, hallway, stairs, turns, and installation conditions.
Get help choosing the right massage chair
Whether you visit our showroom or order from out of state, Tittac can help you review chair size, massage style, delivery options, warranty coverage, and return questions before you buy.
- Compare massage feel, body fit, and comfort features before ordering.
- Ask about delivery access, setup expectations, warranty coverage, and return details.
- Get help by phone, text, chat, or showroom visit depending on where you live.
Need help before ordering? Talk with Tittac before you choose your massage chair.
Local customers can visit the showroom. Out-of-state customers can still get help by phone, text, or chat before ordering.
Specifications
| User Fit | |
|---|---|
| Maximum User Weight | 280.0 lbs |
| Seat Width | 21.0" |
| Shoulder Width | 25.0" |
| Minimum Doorway Width | 32.0" |
| Chair Dimensions | |
| Chair Dimensions - Upright | 32.0" W x 64.0" L x 48.0" H |
| Chair Dimensions - Reclined | 32.0" W x 79.0" L x 38.0" H |
| Distance to Wall | Approximately 3.0" |
| Chair Weight | 269.1 lbs |
| Package Information | |
| Package Dimensions - Box 1 | 33.5" W x 57.9" L x 50.0" H |
| Package Weight - Box 1 | 325.4 lbs |
| Massage System | |
| Massage Track Type | Flex SL-Track |
| Massage Mechanism | Dual Independent 4D |
| Sonic Pulse Massage | Yes |
| Automatic Body Scan | Yes |
| Heated Massage Rollers | Yes |
| Air Cells | 48 |
| Deep Calf Kneading | Yes |
| Foot Rollers | 6 Total, 3 per Foot |
| Programs & Comfort | |
| Automatic Programs | 20 |
| Manual Massage Modes | 12 |
| Zero Gravity | Yes |
| Lumbar Heating | Yes |
| Calf Heating | Yes |
| Heating Range | Approximately 75–83°F |
| Footrest Extension | Automatic, Up to 6.0" |
| Controls & Convenience | |
| Main Controller | 7" Touchscreen |
| Quick Shortcut Panel | Yes |
| Bluetooth Speakers | Monster Quad Speaker System |
| Chromotherapy Lighting | Yes |
| USB-C Charging Port | Yes |
| Wireless Charging | Yes |
| Power Supply | 110–120V |
| Rated Frequency | 50 / 60Hz |
Please measure your room, doorway, hallway, stairway, turns, and complete delivery path before ordering. The manufacturer lists a minimum doorway width of 32 inches. Actual delivery requirements may vary depending on access and installation conditions.
Owner’s Manual
Download the Osaki Somnus 4D Duoflex AI owner’s manual for setup, operation, safety, maintenance, massage programs, and chair functions.
Osaki Massage Chair Warranty
Osaki massage chairs include a manufacturer limited warranty covering eligible defects in materials and workmanship during normal residential use. Coverage begins on the original purchase date and applies only to the original purchaser.
Warranty Included With Your Chair
The warranty included with this model is shown in the preselected Warranty option above the Add to Cart button. That is the coverage that applies to your purchase and it is included at no additional charge.
Osaki Warranty Coverage by Model
5-Year
Limited Warranty
- Years 1–3: In-home service, replacement parts, and labor
- Years 4–5: Replacement parts only
Osaki warranty terms vary by model. The two plans above are shown for reference only and are not optional upgrades. Only the warranty displayed in the preselected Warranty option for this product applies to your order.
What Is Not Covered
- Physical, accidental, or cosmetic damage
- Commercial, corporate, rental, institutional, or other non-residential use
- Misuse, neglect, improper maintenance, or failure to follow the manufacturer’s instructions
- Unauthorized repairs, alterations, modifications, or use of non-approved replacement parts
- Damage caused by electrical disturbances, power surges, improper voltage, or loss of power
- Environmental damage, including rust, corrosion, fire, flood, wind, hail, earthquake, or tornado
- Shipping, delivery, moving, or handling damage
- Normal wear and cosmetic aging, including fading, fabric pilling, stitching, Velcro, and zippers
- Products purchased from an unauthorized reseller or without valid proof of purchase
Osaki warranties are non-transferable and apply only to the original purchaser. Temporary loss of use while the chair is being inspected, serviced, or repaired is not covered.
Need Warranty Service?
Contact TITTAC Customer Support with your order number and a clear description of the issue. Photos or videos may be requested to help identify the problem. Our team will review the information and 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.
Curbside delivery does not include:
- 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.
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