Prosphyg 770 Series Our most economical aneroid, the 770 is ideal for the budget conscious. The 770 series features a black enamel 300mmHg no-pin stop manometer. Gray cotton cuff with artery label and gauge holder. Latex inflation bladder and bulb. Chrome-plated deflation valve. Complete with leatherette zippered carrying case and operating instructions. Assembled, inspected, and packaged in the U.S.A. from foreign components.