Advanced care features: 1. Simulate trismus, neck stiffness, airway obstruction, carotid artery pulse, radial artery pulse, and pneumothorax 2. Blood pressure measurement function: 1) Blood pressure measurement can be performed with a real blood pressure monitor and stethoscope. 2) With KorotkoffGap sound, the volume can be adjusted. 3) Systolic blood pressure and diastolic blood pressure can be set separately. 4) The values of systolic blood pressure, diastolic blood pressure and pulse frequency can be adjusted arbitrarily according to teaching needs. 5) LCD display.