Drug-free and independent therapy mucus remover utilizing OPEP, a globally trusted method. Continued use helps loosen phlegm and promote coughing to better remove mucus. Effective for many respiratory conditions, this lung exerciser is a tool for anyone with respiratory issues, used for Asthma, Atelectasis, Bronchitis, and Cystic Fibrosis. Universal for most users, the breathing aid includes two Stainless Steel Ball Bearings to adjust from minimal to maximum positive pressure based on lung capacity, age, and health. Quick and easy to use, the mucus clearing device features a simple design with no refills or batteries required, and is easy to clean. Use for five to ten minutes once or twice daily. Designed to help train lungs, this device facilitates gas exchange, improves lung strength, reduces breathlessness, and enhances quality of life. Condition: New. Origin: China.