Hi, I’m Dr. Alan Weidner from Massage Chair Relief, and today I’m going to introduce you to the Osaki DuoMax 4D massage chair. This is a very popular premium chair from Osaki, and it comes with an extended two-year parts and labor warranty. That means you get three years of labor coverage and five years for parts when you purchase this chair.

This chair has a split track design, which means you get an L-track configuration that’s divided into a top and bottom section. Both halves work together but can also function independently. You’ll find four rollers on the bottom and four on the top track. This setup allows for a better stretch because the track isn’t fixed in a strict “L” shape. Instead, it can flatten out, giving you a more effective stretch compared to standard L-track chairs.

The massage strength is solid and adjustable. One of the unique features is the arm rollers, called “piano key rollers.” When you place your arms inside, you’ll feel small rectangular blocks that resemble piano keys. Unlike airbags alone, these rollers push up along your arms in three distinct zones. At first, I thought they were just airbags, but they’re actually a new roller technology that delivers a strong, effective arm massage—great if you prefer more intensity in that area.

The chair includes a tablet remote with a touchscreen interface. It’s very intuitive and graphic, making it easy to see and adjust settings. Another standout feature is the ability to control upper and lower airbag intensity separately. Most chairs—except maybe Loracos—only allow you to adjust all airbags at once. Here, you can tailor the settings for arms and shoulders independently from calves and feet.

The calf section doesn’t use rollers, but instead employs firm rubber nodes that press into the back of your calves while airbags compress and knead in an up-and-down motion. This combination provides an effective calf massage while your feet receive both airbag and roller treatment.

Quick keys on the side give you fast access to functions like intensity and body positioning adjustments, so you don’t always have to navigate the remote.

Another unique feature is the health sensor on the left armrest. It looks similar to a pulse oximeter you’d find in a doctor’s office. When you place your finger inside, it measures your pulse, oxygen saturation, fatigue level, and even microcirculation. Based on these readings, the chair can run a specialized “Health Program” designed for your body’s needs.

Other features include:

• Wireless phone charger

• Heated “belt” pads that can drape over your shoulders and chest or rest behind your back

• Available colors: black, brown (with a subtle purple tint in certain lighting), and taupe

• Wall-hugging design (space saver—needs only 2–3 inches from the wall)

• Memory function to save custom or modified programs

• Bluetooth speakers

• Shoulder, waist, hip, foot, and calf airbags

Overall, this is a strong massage chair, especially in the arms. If you’re not used to arm rollers, it may feel intense at first, but most people quickly adapt and come to appreciate this feature.

We really like the Osaki DuoMax 4D—it’s a great addition to the premium massage chair lineup.

I hope you found this introduction helpful. If you did, please give us a thumbs-up on YouTube and share this video with friends and family on social media.

I’m Dr. Alan Weidner from Massage Chair Relief, and I’ll see you in the next video.