MassaMAX MT339 4D Full-Body Shiatsu Massage Chair Recliner with Electric Extendable Footrest, Zero Gravity, SL-Track, Deep Yoga Stretch, 15 Modes, AI Voice & Foot Rollers (White)

4D full-body shiatsu system: Advanced 4D rollers paired with Air Soothing airbags recreate a hands-like massage experience, offering multiple preset modes (up to 15) and five techniques across 32 airbag contact points that wrap the body. Three adjustable airbag intensity levels compress shoulders, arms, feet and glutes to ease discomfort. Graphene lower-back heating provides therapeutic warmth for acute or chronic strain; SL-Track coverage: The extended SL rail runs from neck to thighs, expanding the treatment zone by about 50%. Auto shoulder-position detection adapts massage positioning and back width to match body contours for precise therapy; Zero Gravity reclining: Space-capsule design provides three floating-angle positions that elevate the knees above the chest to reduce spinal load, lower cardiac strain, and support better circulation; Foot roller & yoga-style stretch: Full-roller foot therapy kneads plantar acupoints while leg airbags deliver enveloping compression. The reclining backrest enables deep yoga-like spinal and upper-body stretching to relax muscles and release tension; Smart controls & audio: Hands-free AI voice control plus a TFT touch interface let you launch programs by voice or touch. Built-in Bluetooth speakers let you stream music during sessions for enhanced relaxation.