RK0300 office chair can effect functions of acupoints stimulation and fatigue elimination through massaging on shoulders, waist, hips and thighs; Auto and manual modes and three massage intensities of strong, medium and weak provide users with many massage functions choice. With heating function on neck, KT0300 office chair can promote blood circulation on neck; Setting automatic working time is 15mins; Seat height can be adjusted freely; Max. backrest reclining angle is 10¡À2 degree