Optimum Aneroid Sphygmomanometer features a deluxe air release valve and inflation bulb. The no pin stop manometer is chrome plated with precision of 300 mmHg. The manometer also features a luminescent dial for easy reading in all light conditions. Our Optimum Aneroid Sphygmomanometer (manual blood pressure) is available in Newborn, Infant, Child, Adult, Large Adult, Thigh, and Adult with D Ring. Each cuff has markings for their respective sizes. Product Includes: Cuff with Markings, Gauge, Inflation Bulb, and Carrying Case Not made with natural rubber latex.