✦ Improves cardio-pulmonary status of the patient, enhancing the overall fitness and wellbeing.✦ Restores and maintains lung capacity in post operative patients by slow, synchronised deep breathing.✦ Lung Exerciser ( Respiratory Fitness ) - Improves oxygenation of blood, reduces fat levels by burning calories.✦ Made from transparent material , three color balls for easier identification of inhaled capacity.✦ Allows visual calibration and estimation of the patients progress and strengthens primary and accessory respiratory muscles and conditions them.Cruzine 3-ball incentive spirometer is a breathing / lung exerciser which is a flow-oriented device, provides an indirect indicator “Ball” of the patient’s inspired volume. It aids in strengthening the respiratory musculature and to help restore and maintain lung capacity by encouraging slow and deep breathing.