1MHz Ultrasound Therapy Physical Pain Relief Body Massage Machine with 2 HandlesTheory: Ultrasound therapy causes mechanical vibrations, from high frequency sound waves, on skin and soft tissue via an aqueous solution (Gel). A gel is applied either to the applicator head or to the skin, which helps the sound waves to evenly penetrate the skin. The ultrasound applicator converts power from the device into acoustic power that can cause thermal or non thermal effects. The sound waves creates microscopic stimulation in the deep