Model / product numberKZ-A18Amazon product IDB0F3DP1DHKResearch basisDocumentation-based analysis; no hands-on test claimedMassage mechanism3DTrack50-inch SL-trackAutomatic programs12 auto modes on current manufacturer listingBody scanYes. Automatic body detection is documented.Zero gravityYes. Three positions are documented.Air compressionShoulders, arms, calves and feet; count not publishedFoot and calfThree-stage foot massager and adjustable calfrestHeatLumbar and calf heatControlsBacklit panel, voice commands and arm shortcutsUpright dimensions50.9 × 30 × 42 inReclined dimensionsNot publishedChair weight150 lbPublished user heightNot published; adjustable calfrestMaximum load250 lbRear clearanceNot publishedPowerNot publishedAssemblyNo installation; arrives fully assembledWarrantyConfirm exact Amazon seller coverage