Ultrasonic with Four Channel Tens can reduce the pain signals going to the spinal cord and brain, which may help relieve pain and relax muscles too. This product has been made using innovative techniques and technologies. Used for enlarging blood vessels and improving blood circulation, this equipment is effective in treating sciatica, sprains, and spasms. Ultrasonic with Four Channel Tens can help relax tight muscles that are sore, and warms muscles and soft tissues, which increases circulation that helps healing. It is portable, highly calibrated, easy to use and fit for heavy-duty usage. This is primarily utilized to heal the pain in muscles or tendons.