Focused 4D massage
The OP-4D Master combines a 4D mechanism, SL-Track, Muscle Tension Detection, lumbar heat and 46-cell air compression for a deeply focused back-and-shoulder experience.
SEE IT IN ACTION
Watch the chair recline and see how its shoulder, back and lower-body systems come together.
YOUR PLACE TO UNWIND
The OP-4D Master combines adaptive 4D roller massage with compression, warmth and precise shoulder attention in one chair.
Settle in, choose a program and let the chair bring the experience from your shoulders through your feet.
HOW IT COMES TOGETHER
A closer look at the movement, positioning and controls behind the massage.
THOROUGH SHOULDER MASSAGE
Ten individual airbags work in sync above and around the shoulders. Their rotating compression is designed to mimic the movement of hands, giving this often tense area focused attention.
SHOULDER MASSAGE NODES
A massage node on each shoulder pad adds a focused touch alongside the air compression, creating a more hand-like feel around your shoulders.
AUTOMATIC SHOULDER ADJUSTMENT
An automatic body scan detects your shoulder height and width. The chair then adjusts the massage rollers to better match your frame before the session begins.
MUSCLE TENSION DETECTION
Perceptive Health Pro checks for tension in the torso area. The chair uses this information to guide a massage program tailored to your needs and body shape.
TOUCHSCREEN CONTROLLER
Browse programs and adjust the massage through the touchscreen. Its swivel mount lets you turn the display to a comfortable viewing angle while seated.
SMART VOICE CONTROL
The OP-4D Master responds to supported Alexa voice commands for hands-free control. You can find the available commands in the user manual.
Requires an Alexa device or the Alexa app on your phone.
APP CONTROL
Download the Osaki Platinum 4D Master app for iPhone or Android to browse programs and adjust the chair from your phone.
46-CELL FULL-BODY AIR MASSAGE
The OP-4D Master uses 46 air cells to apply gentle, rhythmic compression around your shoulders, arms, calves and feet. The air massage works alongside the chair’s roller massage for a more encompassing session.
ATTACHABLE MAGNETIC PILLOW
Before starting a shoulder massage, move the removable pillow to its magnetic attachment point on the side of the chair. This leaves the shoulder area clear for the massage pads to work as intended.
NEGATIVE OXYGEN IONS
The OP-4D Master includes a built-in negative ion function. Turn it on or off from the touchscreen to decide whether to include it while you relax.
SL-TRACK
The SL-Track guides the massage rollers from the neck and shoulders down the back, then curves beneath the seat toward the upper thighs. Its shape helps the rollers maintain contact as they travel.
4D+ MASSAGE MECHANISM
The 4D massage mechanism offers four adjustment levels, with five levels each for intensity, strength and speed. You can also pause the rollers on one spot or focus on a selected part of your back.
ZERO GRAVITY & SPACE SAVING
The one-stage zero gravity position tilts the backrest and raises the legs for a comfortable, supported recline. Thanks to its space-saving motion, the OP-4D Master can be positioned about 3 inches from the wall and still recline fully.
LUMBAR & FEET HEATING
Built-in heating pads add gentle warmth to the lower back and feet while you enjoy the massage. Turn the back and foot heat on or off to suit the session.
Heating pad warmth: approximately 75–83°F.
16 AUTO MASSAGE MODES
Explore a range of full-body and focused routines. Each preset brings together the chair’s massage functions in its own way.
A balanced program that brings the chair’s massage techniques together for a full-body session.
Uses the chair’s body assessment to guide a session around the areas it detects.
A varied head-to-toe routine designed to showcase the Master’s massage range.
A gentler, slower-paced program for winding down before rest.
Combines recline and massage movements for an extended, open feeling.
Places the focus along the back and the path of the SL-track.
A firmer routine for those who prefer more focused pressure.
Concentrates the session around the back and midsection.
A targeted routine with attention to the shoulders, back and lower body.
Pairs massage and stretching movements in a full-body program.
A program for moments spent seated and looking at a phone or tablet.
A calmer full-body sequence for an easy break in the day.
Draws on traditional massage-inspired movements in a preset routine.
A more active-feeling program focused on post-activity relaxation.
An energizing preset to begin the day.
A quieter routine to settle down at the end of the day.
6 MANUAL MASSAGE MODES
Choose a technique, then adjust the massage settings on the touchscreen. Tapping and Shiatsu each offer two variations.
A continuous, circular motion that works along the selected area.
Two rhythmic tapping patterns for a lighter or more lively feel.
Two point-focused patterns that apply pressure along the back.
A smooth rolling motion that travels along the massage path.
AUTOMATIC FOOTREST EXTENSION
The OP-4D Master’s footrest can extend automatically by up to 8 inches to better match your leg length. It helps people of different heights find a more comfortable fit for the leg and foot massage.
SPECIALIZED FOOT ROLLERS
The footrest has three rollers beneath each foot. Their textured ridges move along the soles to add focused pressure from the heels toward the toes.
CALF MASSAGE
Kneading rollers travel vertically along the calves while airbags add rhythmic compression. Together, the two movements create a more complete massage around the lower legs.
SIDE SHORTCUT CONTROLS
Reach frequently used settings from the chair’s side panel while you stay comfortably seated.
BLUETOOTH SURROUND SOUND
Built-in Bluetooth speakers let you listen while you relax.
PHONE CHARGING SURFACE
The built-in charging surface powers a compatible phone wirelessly while you enjoy your massage. Simply place it on the designated area beside the controls.
USB CHARGING PORT
A built-in USB port lets you charge a compatible device while you relax, so it is ready when your massage is over.
DIMENSIONS
Check the OP-4D Master’s width and its upright and fully reclined dimensions when deciding where it will sit.
Specifications
Power & delivery planning
Delivery, installation and warranty terms are determined by Relax And Feel Good store policy. We do not copy another retailer's delivery promises.
Before you decide
Duo means the chair has two separate massage mechanisms. They can work on different areas at the same time: typically one massages the back while the other targets the glutes and upper thighs. The combination varies by model, such as 4D + 3D or 5D + 4D.
A 4D mechanism builds on adjustable roller depth by also varying speed, rhythm and transitions, creating a more dynamic massage feel.
An SL-Track follows the natural curve of the spine and extends beneath the seat toward the glutes. Flexible versions can articulate as the chair changes position.
Air cells are inflatable chambers that apply controlled compression around areas the rollers cannot directly reach. Placement and programming matter as much as the raw number of cells.
Free White Glove delivery is included with our Osaki and Titan massage chairs and HomeRoots massage recliners and recliners within the contiguous United States (the lower 48 states). The service is included automatically; no separate upgrade or request is needed.
The delivery team brings your product inside, places it in your chosen room, unpacks it, and completes assembly and basic setup. Delivery via stairs or an elevator is included when the route is accessible and safe. Keep all original boxes and packing materials for at least 30 calendar days after delivery in case you decide to return the product. Original packaging is required for change-of-mind returns. Ask the White Glove delivery team to leave the packaging with you.
The customer is responsible for ensuring a clear, unobstructed delivery path with sufficient space to move the product safely to the chosen room. Before delivery, measure all doorways, hallways, tight turns, stairways and elevators along the route, and remove any obstacles. Notify us before delivery of any access limitations.
Keep all original boxes and packing materials for at least 30 calendar days after delivery in case you decide to return the product. Original packaging is required for change-of-mind returns. Ask the White Glove delivery team to leave the packaging with you.
Orders are processed within 1–2 business days. This refers to dispatch, not arrival.
Free White Glove delivery is included with our Osaki and Titan massage chairs and HomeRoots massage recliners and recliners within the contiguous United States (the lower 48 states). The service is included automatically; no separate upgrade or request is needed.
Massage chairs, massage recliners and recliners can be delivered only within the contiguous United States (the lower 48 states). We do not ship to Alaska, Hawaii, Puerto Rico, Canada or any other international destination.
Estimated total delivery time is 6–12 business days. This includes 1–2 business days for order processing and an estimated 5–10 business days in transit after dispatch. Delivery dates are estimates and are not guaranteed.
The delivery team brings your product inside, places it in your chosen room, unpacks it, and completes assembly and basic setup. Delivery via stairs or an elevator is included when the route is accessible and safe. Keep all original boxes and packing materials for at least 30 calendar days after delivery in case you decide to return the product. Original packaging is required for change-of-mind returns. Ask the White Glove delivery team to leave the packaging with you.
The customer is responsible for ensuring a clear, unobstructed delivery path with sufficient space to move the product safely to the chosen room. Before delivery, measure all doorways, hallways, tight turns, stairways and elevators along the route, and remove any obstacles. Notify us before delivery of any access limitations.
Keep all original boxes and packing materials for at least 30 calendar days after delivery in case you decide to return the product. Original packaging is required for change-of-mind returns. Ask the White Glove delivery team to leave the packaging with you.
Massage chairs ship from Texas. All transit times are estimates. We cannot guarantee a specific delivery date or delivery timeframe.
If you need your chair by a particular date, please order well in advance and contact us before placing your order. We’ll help coordinate delivery around your plans, but arrival by your requested date cannot be guaranteed.
Read Shipping & Delivery →Contact us within 30 calendar days of delivery to request a return or exchange. Written authorization and return instructions are required before shipping. The 30-day deadline is for your request; your approved shipping deadline is provided afterward.
For change-of-mind returns, you pay original outbound delivery costs and return shipping, even if your order shipped free. Any applicable restocking fees or other return charges are explained before you approve the return arrangements. Damage and defects are handled separately.
Keep all original boxes and packing materials for at least 30 calendar days after delivery in case you decide to return the product. Original packaging is required for change-of-mind returns. Ask the White Glove delivery team to leave the packaging with you. Returns must be in new, resellable condition with manuals and accessories. Approved refunds go to your original payment method after inspection, less applicable charges disclosed to you.
Read our return policy →Years 1–3: covered parts and labor. Years 4–5: covered parts. Manufacturer exclusions apply.
Coverage is provided by Titan Chair LLC and is subject to the manufacturer’s exclusions and service requirements.
View coverage and warranty terms →Massage chairs can look similar while feeling very different. Compare the features that matter most to you before deciding.
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