The Prosphyg 760 Pocket Aneroid Sphyg is the choice for professionals looking for a high quality sphygmomanometer at a low price. It features a black enamel 300mmHg manometer that provides day-in, day-out dependability, exceeding industry standards. The Adcuff nylon cuff displays ADC's Size Guide marking system to prevent mis-cuffing. Chrome-plated brass valve releases air.