Breathing Aids for Lungs - A natural handheld device using Positive Expiratory.Its stainless steel ball bearing and internal diaphragm create vibration and pressure loosening mucus from your airways and throatMucus can then be expelled by coughing.Handheld Device Air Physio Lung Expander - Is used as a treatment and preven tative for the following medical conditions, Asthma, Atelectasis, Bronchiectasis, Emphysema and Chronic Bronchitis and many more respiratory conditions.Easy To Use - Our mucus clearing device is simple, quickly and easily reduce mucus buildup. you can feel it working in a matter of seconds and its small enough to carry with you anywhere you go.With most people only needing 5-10 minutes,1-2 times per day.Universal Breathing Aids for Lungs - Come with two Stainless Steel Ball Bearings so that you can adjust to Minimal or Maximum Positive Pressure depending on your lung capacity, age, and current health.ATTENTION: People with arthritis in the hand, flutter device may find it difficult to open the child safety lock to disassemble- alternatively, device can be cleaned by flushing hot water. And, Some people find it takes days to see or feel results,while others it may help sooner- keep up usage until correct method and results are obtained.