Description: Neck:4 rollers with infrared heating moving up and down to massage the whole back Two infrared heat + vibration in Lumbar place Back:18 warm massage heads forward&reverse rotary kneading in a harder&softer way 3 levels of vibration adjustment for buttocks Heating temperatures adjustment 15 minutes auto shut off 3 levels of neck part height can be adjusted. 3 levels of the angle of the neck part can be adjusted. CW and CCW shiatsu direction can be chosen for the neck and back parts.