1Easy Breathing: The mucus clearance device eases breathing and reduces breathlessness by clearing and cleaning your airways, makes it easier to remove phlegm and mucus from your respiratory system. 2Athletic Performance: Lung function improvement and quicker recovery post exercise are benefits of using the mucus clearance device, which enhances overall athletic performance. 3Lung Health: Use the mucus clearance device to maintain healthy lungs, reducing the risk of lung infections and respiratory issues such as bronchitis or asthma. 4Oral Airflow Differences: The mucus clearance device is designed to work with your nature airflow, ensuring efficient mucus clearance and effortless breathing. 5Operating Principle: Vibrations produced by the mucus clearance device loosen the mucus in airway walls, causing the pressure inside bronchial tubes to increase intermittently. These vibrations are released, thus keeping the airway open during exhalation and ensuring that mucus travels freely upward to be cleared out. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store