Full Body Massage: The 48'/122cm SL-TRACK massage chair extends from the neck to the thigh, and body scan can intelligently detect the shoulder and adjust the massage and back width, to 100% fit the body curve. 10-18 auto modes, 4 massage techniques and 32 airbags offer you a deep tissue massage to relieve muscle fatigue and tension. Zero Gravity Design: The 3 levels zero gravity massage chair allows your body to float and relax. When your knees are elevated above your chest, it can alleviate the spine pressure and heart strain, improve blood circulation and provide ultimate comfort. Easy Adjustments: The massage chair recliner can be controlled via a touchscreen to adjust massage intensity, duration, techniques, and airbag pressure. It's simple to operate you just need to lie down and choose a comfortable massage mode