COREnine C400 Full Body Massage Chair

We teamed up with Splitit to provide interest-free monthly payments for up to 12 months on all of our COREnine massage chairs.

View the Splitit payment page for additional information.

If you are not completely satisfied with your massage chair purchase, COREnine offers a full refund minus a 15% shipping and restocking fee for all massage chairs that are purchased on our website within 30 days of the purchase date. 

Please Note: We cannot refund returns for massage chairs that were not purchased on our website. If you purchased your COREnine massage chair at a retail store, contact the store to learn about their return/refund policy.

Returned massage chairs must be received in the original box, in new condition and with all of the original packaging, parts, accessories, and documents. A refund will be issued after the returned product is received and inspected. Please allow 3 - 4 weeks for the refund to be processed.

View the return policy page for additional information.

Upright Dimensions: 51" (l) x 30" (w)  x 45" (h)

Reclined Dimensions: 72"(l) x 30"(w) x 34"(h) 

Seat Dimensions: 20" (w) x 17" (depth)  x 23" (h)

Chair Net Weight: 160 lbs 

Weight Capacity: 285 lbs

Go to the instruction manuals page and click on the C400 Massage Chair Manual to download a PDF version of this manual.

The C400 Massage Chair has a 2 year parts/2 year in home service warranty.

You can email us or call us at 800.880.7750 for warranty issues.

Go to our service/repair page to learn about the steps you can take if you encounter a problem with your massage chair.

Go to our registration page to register your C400 Massage Chair.

The COREnine C400 Massage Chair cushion foam has been tested to meet CertiPUR-US® rigorous standards for emissions, content, and durability. Specifically, the foam is made without formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, mercury, lead, or other heavy metals. In addition, the foam has low VOC (volatile organic compound) emissions for indoor air quality and is screened for relevant chemicals, including flame retardants, that are classified as carcinogens, mutagens, or reproductive toxins that are harmful to human health.

The COREnine C400 uses a 4D shiatsu mechanism, the most advanced roller technology available paired with a robotic SL-track that covers the neck, spine, glutes, and thighs.

Add body scanning, multi-stage zero gravity, CertiPUR-US® foam, and EcoBreathe™ leather, and you have a feature set that typically costs $5,000–$8,000 in competing luxury brands.

For regular users, the C400 pays for itself within one to two years.

A single professional massage session averages $80–$120 in the U.S. Someone using the chair three times per week would otherwise spend $12,000–$19,000  per year. The C400's 4D shiatsu, SL-track coverage, zero gravity, and free white glove delivery represent exceptional value in the premium segment.

A 4D massage chair adds variable-speed roller movement to the three-dimensional depth control of 3D models. In the C400, rollers can accelerate over tight knots and slow down for a gentler glide within the same stroke — mimicking the intuitive pressure variation of a trained massage therapist. Most users notice an immediate difference compared to the fixed-rhythm movement of 3D or 2D chairs.

The C400’s extended SL-track guides the massage rollers from the neck down the full length of the spine, through the glutes, and into the upper thighs. Unlike standard S-track chairs that stop at the lower back, the SL-track provides targeted coverage to the hips, glutes, and hamstrings—areas where many people hold significant tension. This expanded massage range makes the C400 especially effective for relieving lower back pain, hip tightness, and sciatica discomfort.

Yes, the C400 is specifically designed to help relieve back pain through its 4D shiatsu massage, lumbar heat therapy, SL-track spinal coverage from the neck to the thighs, and multi-stage zero gravity positioning. Together, these features are associated with reduced lower back pain and muscle tension, and improved spinal decompression. Individuals with chronic medical conditions should consult a physician before use.

Most wellness professionals recommend 15–30 minutes per session, one to three times daily. Daily use at moderate intensity is appropriate for healthy adults and supports muscle recovery, stress reduction, and circulatory health. First-time users should begin with shorter, lower-intensity sessions. People with cardiovascular conditions, pregnancy, osteoporosis, or recent surgery should consult a physician before use.

A high-quality 4D massage chair like the C400 can deliver many of the same benefits associated with professional massage, including muscle tension relief, improved circulation, stress and cortisol reduction, relaxation, and better sleep—all from the comfort of home. While it cannot respond to real-time verbal feedback, address specific acute injuries, or fully replicate the personal interaction and touch of a massage therapist, the C400 provides a convenient and effective solution for daily recovery, stress management, and ongoing wellness. For many users, it serves as a practical alternative to frequent massage therapy appointments.

Zero gravity positioning reclines the chair so your knees are elevated to approximately the same level as your heart, helping distribute body weight more evenly and reduce pressure on the spine. Inspired by positions developed to minimize stress on astronauts during launch, Zero Gravity allows the massage rollers to engage the body more effectively and comfortably.

In the C400, multi-stage zero gravity recline creates a sensation many users describe as nearly weightless, enhancing relaxation while allowing the massage system to deliver deeper, more immersive relief. The result is a massage experience that feels more restorative and enveloping than a traditional seated position.

Regular use of the C400 supports a wide range of wellness benefits associated with massage therapy, including relief from back pain, muscle tension, and joint stiffness; improved circulation and lymphatic flow; reduced cortisol and anxiety; deeper, more restorative sleep; lower resting heart rate and blood pressure; and increased energy with reduced fatigue.

By combining shiatsu massage, air compression therapy, stretching programs, heat therapy, and multi-stage zero gravity recline in a single session, the C400 delivers a comprehensive full-body wellness experience designed to help you feel more relaxed, refreshed, and restored every day.

Yes. The C400 combines 4D shiatsu massage, zero gravity recline, lumbar heat therapy, and Bluetooth audio to create a deeply relaxing environment that engages the parasympathetic nervous system and helps prepare the body for restful sleep.

Research has shown that massage therapy reduces stress, promotes relaxation, and improves sleep quality. The C400’s stretching, rocking, and full-body massage functions are designed to help ease muscle tension and encourage a calm, restorative state before bedtime, making it an ideal addition to an evening wellness routine.

The C400 delivers 4D shiatsu massage, SL-track coverage, multi-stage zero gravity recline, foot reflexology rollers, and heat therapy—providing a complete premium massage experience at a compelling price. The C650 builds on that foundation with enhanced customization, additional auto massage programs, and upgraded luxury finishes. The C400 is ideal for users seeking serious therapeutic performance at the best value, while the C650 is designed for those who want the most immersive, personalized, and feature-rich experience COREnine offers.

The C400’s 4D shiatsu mechanism is engineered to mimic a remarkably natural massage experience by varying roller speed, depth, and pressure throughout each session. Four precision rollers work in combination with full-body air compression massage for the arms, shoulders, hips, and legs to provide comprehensive relief from head to toe.

An automatic body scan measures the shoulder height and leg length before each session to ensure the massage is tailored to your unique shape rather than a generic profile. The result is a highly personalized massage experience that closely replicates the feel of hands-on therapy for everyday relaxation and recovery.

Yes. The C400 features automatic body-scanning technology that detects shoulder height and adjusts the massage rollers to match your unique body shape. The chair’s extended SL-track follows the natural curve of the spine and accommodates a wide range of body types and heights. Roller intensity and air compression settings can also be customized, allowing users to tailor the massage experience to their comfort preferences.

The C400 ships with free white glove delivery when purchased directly on corenineusa.com. This includes in-home delivery to the room of choice, complete chair assembly, and removal of all packaging. The chair arrives in a single box, ready to use. Delivery within the continental U.S. takes approximately 3–4 weeks.

The C400 features space-saving recline technology that requires just 1 inch of wall clearance to reach a full Zero Gravity position. As the chair reclines, its base slides forward, allowing it to achieve a deep recline without extending significantly into the room. Unlike many traditional massage chairs that require 12–18 inches of clearance behind them, the C400 can be placed close to a wall, making it an excellent choice for apartments, home offices, living rooms, and other spaces where floor space is limited.

The C400 is backed by a 2-year parts warranty and a 2-year in-home service warranty. In-home service means that if a covered component requires repair, a technician comes directly to your home—eliminating the need to package and ship a large massage chair for service.

To activate your warranty, register your product using the serial number located on the back of the chair near the power switch.

Yes. The EcoBreathe™ synthetic leather wipes clean with a damp cloth followed by a dry cloth. Plastic components can be cleaned with a mild 3–5% neutral detergent on a damp cloth. Avoid benzene, alcohol, or solvent-based cleaners on any surface, and always disconnect power before cleaning. The chair's temperature-neutral leather is specifically designed to resist moisture and maintain its feel over time.

The COREnine C400 stands out as one of the best-value premium massage chairs in the $2,800 - $3,500 price range, combining advanced features typically found in higher-priced models with an accessible price point. The chair includes 4D shiatsu massage technology, extended SL-track coverage, multi-stage zero gravity recline, foot reflexology rollers, lumbar heat therapy, Bluetooth audio, body scanning, and free white-glove delivery with in-home warranty service. For buyers seeking a balance of therapeutic performance, premium features, and overall value, the C400 compares favorably with many higher-priced models from competing massage chair brands Osaki, Infinity, and Human Touch at a lower price point.

When evaluating a premium massage chair, there are five key features to consider:

1. Massage Technology: Advanced 4D massage systems provide the most realistic and customizable experience by adjusting roller speed, depth, and intensity throughout the session.

2. Track Design: An SL-track offers more comprehensive coverage, following the natural curve of the spine and extending through the glutes and upper thighs for a more complete massage.

3. Zero Gravity Recline: Multi-stage Zero Gravity positions allow you to fine-tune your recline angle for greater comfort and enhanced massage effectiveness.

4. Body Scanning Technology: Automatic body scanning helps ensure the massage is tailored to your unique body shape and size.

5. Warranty and Service: Look for strong warranty coverage and in-home service options, which are often more convenient than return-to-depot repair programs.

   
   

The COREnine C400 includes all five of these premium features, making it an excellent choice for users seeking advanced performance, comfort, and long-term value.