Pulmonary breathing aid - a natural hand-held device that uses positive exhalation. Its stainless steel ball bearings and internal diaphragm create vibration and pressure that loosens mucus in your airways and throat. The mucus can then be expelled by coughing. Handheld Air Physical Lung Dilator - For the treatment and prevention of asthma, atelectasis, bronchiectasis, emphysema and chronic bronchitis and many more respiratory diseases. EASY TO USE - Our slime removal device reduces slime buildup simply, quickly and easily. You can feel how it works in seconds, and it's small enough to carry around. Most people only need 5-10 minutes, 1-2 times a day. Universal Lung Breathing Aid - Comes with two stainless steel ball bearings so you can adjust to minimum or maximum positive pressure based on your lung capacity, age and current health. NOTE: For people with arthritis in their hands, the flutter unit may find it difficult to open the child safety lock for removal - alternatively, the unit can be cleaned by rinsing in hot water. And, some people find that it takes a few days to see or feel results, while others may keep using it sooner until they get the right approach and results. Color: green Packing list: 2pcs