PURISUN Vibratory hot compress headrest (black-1)，Powerful 3-D vibration heating massage, 3d-sense massage head designed to relax overused and tight muscles optional hot pack heating function adds extra help to soothe muscles, helps relieve neck and lower back pain by increasing blood circulation. 3 massage speeds available. The shoulder massager has 3 massage speeds. You are free to choose the massage speed that suits you. An elastic band is attached to the back of the Pillow Massager to secure the neck Massager Pillow to an office or car chair. Safety Pillow Massager for neck Massager with overheat protection and 15-minute automatic shutdown, don't worry about forgetting to turn off the neck Massager, aC adapters are also included.