1. BACK TEST: Auto intellectual massage model for full body kneading , tapping ,rolling and dual function (kneading & tapping ) on backrest. 2. 3 levels of vibration intensity ( weak , medium , strong ). 3. 3 levels of massage intensity ( weak , medium , strong ). 4. Manually controlled angle of backrest and footrest . 5. Equipped a set of intelligentized four-wheel driven 3D massage mechanism. 6. Detachable arm. 7. Zero graviy . 8. Footrest with extending function up to 10 CM , contracting function. 9. Two actuator Remark: for 2D chairs without the function No.5 and No. 7. Product Size: 0.76CBM Carton Size (L*W*H)CM: top box----116*98*67 bottom tray----99.5*68.5*15 Loadablity: 82 PCS/40HQ 40 PCS/20GP Gross Weight (KG): 77 Net Weight (KG): 75