... warmer could be used warm body, such as hands, feet, back, waist, shoulder, knee. BNA-01BNA-02BNA-01 infrared ... warmer could be used warm body, such as hands, feet, back, waist, shoulder, knee. It could be helped for ... . Samples for use.1. Warming on hands and feet. After switching on 5 minute, hold this product ... to rub the body, such as feet, leg, hands, arm, face, and back, for about 10~30minute.6. ...