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Osaki 5D+4D Kairos Duo vs Infinity Gen Max 4D

Side-by-side spec breakdown — track type, roller tech, heat, zero gravity, airbags, warranty, and expert scores.

Osaki 5D+4D Kairos Duo

Osaki

5D+4D Kairos Duo

Infinity Gen Max 4D

Infinity

Gen Max 4D

SpecValueValue
Track TypeSL-TrackL-Track
Roller Tech5D4D
Zero Gravity3-stage2-stage
Heat Therapyfull-bodylumbar
Airbags5664
Body ScanNoNo
Height Range5'4" – 6'0"6'0" – 6'4"
Weight Capacity280 lbs300 lbs
Techniquesshiatsu, kneading, tapping, rolling, scrapingshiatsu, kneading, tapping, rolling
Smart FeaturesNoneapp-control
Warranty3 Years3 Years

✓ indicates best value in that row

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Which should you buy?

Here's a quick breakdown of who each chair is best suited for, based on track type, price tier, and our editorial scores.

Luxury · 4.8/5

Osaki 5D+4D Kairos Duo

SL-Track (neck to glutes)

Best for

  • Industry-first 5D+4D mechanism
  • Smart pressure sensors
  • 56-cell airbag system

Watch out for

  • ·Very high price
  • ·Complex operation
Full Osaki 5D+4D Kairos Duo review →

Luxury · 4.7/5

Infinity Gen Max 4D

L-Track (neck to hamstrings)

Best for

  • 64 comprehensive airbags
  • Deep calf kneading
  • App control

Watch out for

  • ·Heavy at 324 lbs
  • ·Premium pricing
Full Infinity Gen Max 4D review →