This is a vintage manual sphygmomanometer.
It is gray and features a black plastic storage pouch with zipper closure, an arm cuff with easy fasten closure, a gauge holder, and an inflation bulb.
The cuff measures about 21" long and 6" wide. The storage pouch measures about 7.5" wide, 5" tall, and 2" deep.
It is in good pre-owned condition with the inflation bulb needing to be replaced.