Osaki OP-4D Master - Floor Model

• 4D+ Massage Mechanism
• Thorough Shoulder Massage — 10 airbags
• SL-Track — neck to hamstrings
• Muscle Tension Detection
• Automatic body scan
• Touchscreen controller

• 16 auto + 4 manual programs
• Attachable magnetic pillow
• Negative oxygen ions
• Lumbar & feet heating
• Extendable footrest — up to 8"
• Calf & foot rollers

• Zero gravity + space saving
• App & Alexa voice control
• Bluetooth surround sound
• LED mood lighting
• Phone charging & USB port
• Side control panel

Thorough Shoulder Massage

The first-ever over-the-shoulder massage using airbag compression that rotates and moves like real hands, with 10 individual airbags synchronized for a soothing massage.

Automatic Shoulder Adjustment

An automatic body scan detects your shoulder height and width, then repositions the massage rollers for a more effective, personalized massage.

Muscle Tension Detection

The Health Pro program detects tension in your torso and tailors a massage program to your specific needs, since every body is different.

Shoulder Massage Nodes

An extra massage node on each side of the shoulder pad emulates the feel of a hand massage, layering onto the airbag compression for a more complete shoulder session.

10 airbags · Rotating motion · Hand-like compression

Touchscreen Controller

The swivel-mount touchscreen controller allows for easy navigation and adjustment, and can be conveniently positioned at different angles for effortless reach.

Swivel mount · Intuitive navigation · Full control

App & Smart Voice Control

Download the Osaki Premium 4D+ Master app (iPhone or Android) to control the chair from your phone, or use Smart Voice Control — just say "Alexa" or "Hi, Osaki" followed by a command.

iOS & Android app · Alexa compatible · Hands-free control

4D+ SL-Track System

Made of laser-crafted steel, the SL-Track lets the 4D+ rollers freely reach your entire body — extending all the way from your neck and shoulders to your hamstrings, with 4 and 5 levels of intensity, strength and speed.

Neck to hamstrings · Laser-crafted steel · Spot & full-back treatment

Zero Gravity Reclining & Space Saving

Encounter relaxation in a state of weightlessness with NASA-inspired zero gravity reclining. Space Saving Technology lets the chair sit just 3 inches from the wall and still achieve a full recline.

Weightless recline · 3" from wall · NASA-inspired

Lumbar & Feet Heating

Built-in heating coils warm the lower back and feet, effectively easing soreness and helping muscles relax more fully during your session.

Lower back & feet · Heating coils · Deeper relaxation

Extendable Footrest

Built for users of different heights, the automatic spring-loaded footrest elongates up to 8 inches so the chair fits your body, not the other way around.

Up to 8" extension · Spring-loaded · Fits any height

Calf & Foot Rollers

A sequence of kneading rollers moves vertically through the calves while airbag compression handles the rest, and specialized foot rollers activate acupuncture points along scientifically designed reflexology ridges — three rollers per foot, heel to toe.

Kneading rollers · Air compression · Reflexology ridges

Attachable Magnetic Pillow

Attach the magnetic pillow to the side of the chair before starting a massage to receive a more complete, properly positioned shoulder massage.

Magnetic attachment · Side-mounted · Optimized shoulder fit

Negative Oxygen Ions

Built-in negative air ionization therapy is incorporated throughout the chair. Research suggests negative air ionization therapy can help relieve stress and improve energy.

Built-in ionizer · Stress relief · Improved energy

Finished in durable synthetic leather with a sleek, modern silhouette. Because this is a single floor model, it's only available in the color shown — Black — and isn't available in any other finish.