Main function features:■ adult simulated right arm, and measured noninvasive blood pressure with real sphygmomanometer■ with korotkoffgap sound.■ the pressure value is displayed by dynamic millimeter mercury column.■ systolic and diastolic pressures can be set separately.■ the values of systolic pressure, diastolic pressure and pulse frequency can be adjusted arbitrarily according to the teaching situation■ the blood pressure setting can be accurate to 1 mm Hg.■ volume can be adjusted.