The Perfecxa Respiratory Lung Exerciser is designed to help improve lung function and respiratory strength. With a wide flow rate range from 600 to 1200 cc/sec, it provides effective resistance training for the lungs. Each chamber displays the minimum flow rate, while three color-coded balls allow for easy visual tracking of progress. This non-sterile exerciser is ideal for respiratory therapy and fitness, making it suitable for both recovery and preventive care.