SA 501 Sphygmomanometer Pneumatic Sphygmomanometer with Stethoscope SA 501 is lightweight, high quality and specification with a tight and long pressure band. Equipped with a high quality stethoscope. made in Japan. A home blood pressure monitor with a cuff and a stethoscope.You can manually inflate and deflate it yourself for professional accurate readings using the aneroid gauge, air release valve, and inflation lamp along with the included stethoscope.