1、Adjustable Breath Assist Mucus Clearance Device: Generates pressure vibrations to loosen airway mucus, allowing you to remove it by coughing, making you feel more comfortable. 2、Exercising Exhalation: Steel balls create resistance to airflow when you exhale, which is exercising exhalation muscles and strengthening lung capacity, good for your body health. 3、Multiple Exercise Levels: Equipped with different sizes of stainless steel balls, which is creating varying exercise levels suitable for adults and children, better training of the inspiratory muscles. 4、Good For Breathing: Helps regulate and control your breathing pattern, promoting better oxygen intake for improved overall health and wellness, leading to a more balanced and harmonious lifestyle. 5、With Interchangeable Mouthpieces: Promotes effective mucus clearance and supports respiratory muscle training, enhancing lung function and improving overall respiratory health for optimal well being and vitality. Item Title: Adjustable Breathing Vibrator Mucus Plug Material: Medical pp Purpose: Helps regulate and control your breathing patterns 1 x Breathing Vibrating Sputum Expectorator 10 x Filter Cottons 1 x Mouthpiece 1 x Instruction Manual 2 x Steel Balls 1 x Storage Box