Osaki OS-4000 Executive Zero Gravity – Expert Review


The Osaki OS-4000 is one of the most advanced massage chairs on the market out there. With its premium feature set and cutting edge massage technology, it can deliver a very relaxing massage that will relieve you of physical and mental stress. It is the most popular model of the Osaki brand and in our opinion one of the best massage chairs that you can buy today. In this Osaki OS-4000 massage chair review we will be taking a deeper look into what makes it a good choice for anyone looking for a premium massage chair. For a comparison with other premium massage chairs check out this comparison article.

Massaging Features

Airbags

A good massage chair should provide a lot of airbags so you get a natural feeling massage. The Osaki OS-4000 features a whopping 48 airbags. These are enough to provide coverage to your whole body. Such a large number of airbags ensure that the massage emulates that provided by human hands as closely as possible.

The airbags are distributed for maximum comfort and pleasure. There are 10 of them for your feet, 10 for the calves, 3 to provide cushioning for the seat, 2 for the back, 2 for shoulders, 3 in the neck and 3 in the hips area. This really covers the entire body.

All of these airbags can be customized to 5 levels of intensity, so you can get a personalized massage experience as you desire.

Roller Technology

The massage chair employs advanced roller and kneading technology for a comfortable massage. Osaki claims that this chair provides an experienced similar to that of a professional massage therapist. The rollers can knead while airbags grasp certain areas to provide an effective massage.

A highlight of the chair is the presence of a long 30-inch roller that caters for the back area of a person. Due to its long stroke it has a reach that starts from your neck and goes all the way down to your lumbar area.

Unlike cheaper massage chairs, the rollers in the Osaki OS-4000 are made of extra soft material and mimic the feel of the human thumb. These rollers even offer customizability in the form of medium and narrow width modes, so you can really customize your massage experience.

Body Scan

Body scans are not an uncommon feature in massage chairs these days. They even come in some of the budget massage chairs out there. Still, it is a nice feature and the OS-4000 has a comprehensive one that adjusts various parameters on the chair to suit your body best.

Ergonomic Design

The Osaki OS-4000 features a special design for the seat that is called S-Track. What that means is that this seat’s shape is designed to follow a human spine’s natural S-shaped curve. The whole S-Track of the seat can be adjusted for length and width in conjunction with the massage chair’s body scan function. This ergonomic design ensures that your back gets the maximum coverage possible and the massage is effective as a result.

Zero Gravity Technology

The Osaki OS-4000 is a premium massage chair that offers a feature called zero gravity. What that means is that this chair is able to recline to such an extent that the level of your head, chest and the legs is exactly the same. This way the body is said to be in a position of zero gravity, where it is in an apparent state of weightlessness.

This state ensures that the there is no excessive pressure on any one body part, as the pressure is evenly distributed across the body. While in this position the massage will work better to relieve pain and stress and it can even be soothing to the brain.

Heat Massage Therapy

The massage chair is equipped with heating modules for the lumbar area which can provide a relaxing heating effect to the back muscles. This relaxes and softens the back muscles ensuring they get maximum benefit of the massage.

Warranty

The massage chair comes with a 3 year warranty.

Pros and Cons

Pros
  • S-track seat design
  • Zero gravity massage
  • 48 airbags for complete body coverage
  • Body scan to adjust massage chair to your body type
Cons
  • This massage chair takes a lot of room
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