Ultrasonic stimulator for medical use SM-250 designed compactly has 1Mhz energy and stimulates the regions of body to reduce pains or care skin. You can change ultrasound's pulse and period and also adjust ultrasonic intensity in 20 stages [ Effects of ultrasonic stimulating ] Heat Effect Promoting metabolism and normalizing the function of the blood vessels by hyperthermia in the skin. Cleansing Function Cleansing function eliminating waste matter from skin by minute bubble of temporary cavilations due to ultrasonic vibration in a high speed Pain relieve Pain mitigation activating convection current and improving the circulation of blood and lymphs due to heat effect. Specifications Power voltage AC220V, 50/60Hz Power consumption 38W Dimension W434 X L250 X H96.5mm Weight 2.62Kg Output frequency 1MHz±20% Output intensity Less than 3W/㎠ Display FND & LED Timer 1-15 minutes free setting