The high-quality Bluetooth speakers installed around the head and USB charger and holder, quick control panel on armrest. The intelligent mechanical massage hands will continuously collect your back-curve data and simulate the massage techniques of professional masseurs to achieve 3D massage. Calf rest and footrest can both extend for 20cm to accommodate different leg sizes. Unique ankle stretch function to relax foot’s tendon and fascia. Along the specially designed SL-shaped massage rail (135cm), the mechanical massage hands can go back to leg reaching every section of the spine. Create a weightless environment to reduce the pressure on your spine. Lay back and enjoy the full body massage under zero gravity.