Breathing exerciser: Innovative system to exercise respiration through inspiration Solid, non-shaky single piece construction; 3 chambers compatible with differing inhalation rates Device is composed of Base and central part divided into three chambers containing three small spheres different in color Three spheres rise proportionately to the inspiration exerted by the user. Innovative design, can be dis-assembled into parts compatible with cleaning and disinfection Complete Instructions Provided. Helps achieve optimum lung capacity and restoring disrupted breathing patterns 3 Balls Lungs/Respiratory/Breathing Exerciser works on the principle of resistance. As you inhale, the resistance created makes your muscles work harder, and the harder they work the stronger and more durable they become. As your breathing power improves, Lung Exerciser can be gradually adjusted to provide more resistance with just the twist of a knob. Spirometry is an important tool used for generating pneumotachographs, which are helpful in assessing various common Breathing conditions. With 3 Balls Spirometer Lung Exerciser, you can relieve the symptoms of breathlessness by giving your lungs a daily workout from the comfort of the armchair. Just inhale through Lung Exerciser for a few minutes twice a day in a simple breathing pattern as shown in the instructions.