WA Tycos Silver Ring Hand Aneroid Blood Pressure Edema Products Vacuum Range: 80 550 mm Hg The unfolded towel measures Vacuum Range: 80 550 mm Hg Weight: 20g (approx Silver Ring Trigger Release Hand Aneroid Sphygmomanometer * Unit with Adult Cuff * Innovative trigger release air valve to ensure smooth even deflation all with the press of a button * Latex free for safety * One piece cuff is more durable and easier to use * Thermally treated diaphragm maintains calibration * Zinc die cast housing for mechanical stability * Double shell ABS housing for durability * Ergonomic design works well in right or left hand * Luer lock for easy cuff size changes * Thermally treated diaphragm maintains calibration * Polyester zipper case *