ADC's Prosphyg 790 series home use sphygmomanometer is assembled using many of the same components found in their professional grade products and features a 10 year calibration warranty. This unit features a D-ring self-adjusting cuff for one handed application with attached diaphragm only scope for one-handed use. Features and Benefits Black enamel 300mmHg no-pin stop manometer. Nylon D-Ring self-adjusting cuff with attached diaphragm only scope for one-handed use. Scope features adjustable chrome binaurals and black 22" PVC tubing. Latex inflation bladder and bulb. Chrome-plated deflation valve. Zippered carrying case and operating instructions. Assembled, inspected, and packaged in the USA.