Single Ball Spirometer helps patients for the recovery the normal respiration after an abdominal or chest surgery. It has compact size, dual chamber design, and low resistance. This spirometer is made of medical grade material to ensure it optimum quality and non toxic nature. Its double chamber design generates a constant resistance that lifts the ball up as patient keeps up inspiration equal to the chosen inspiratory flow setting. We offer this Single Ball Spirometer to our valuable customer at market reasonable price.