This left arm connects to adult Patient Care Manikins (if mentioned as an option). Systolic and diastolic pressures, auscultation gap and pulse rate are adjustable. The cuff pressure can be seen on a display. A speaker system with volume control makes the stethoscope sounds audible for large groups. Features include: • Palpable redial pulse when cuff pressure is less than the selected systolic blood pressure • Korotkoff sounds K1 through K4 (K5 is silence) are audible in the antecubital area between systolic and diastolic pressures • Korotkoff sounds are automatically silenced if auscultation gap is selected • Korotkoff sounds are automatically adjusted depending upon selected heart rate and rate of cuff deflation International power supply 100 to 240 VAC. Supplied with stethoscope, shygmanometer cuff with tubing assembly and carrying bag.