Comfier Shiatsu Neck & Back Massager with Heat & APP Control Comfier multipurpose shiatsu massage chair combines Shiatsu Finger Pressure Kneading Rolling Spot Compression and Infrared Heating functions to help you completely eliminate fatigue and soreness after working hard or driving for a long time. This massager for neck nad back supports App function please refer to the guide in the user manual to enjoy the massage chair pad easily by operating your smart mobile phone.