Enhanced Lung Capacity Measurement: This 5000ml breathing exercise device for lungs is designed to provide a comprehensive lung capacity assessment. Ideal for adults focused on supporting or improving their lung function. Enhance Lung Exercise: This incentive spirometer adult is perfect for those looking to strengthen lung capacity, expand lung strength, and improve overall breathing function. Regular use of this device can lead to better oxygen intake and more efficient breathing. Precise Airflow Control: Featuring a built-in airflow indicator, this breathing exercise device for lungs guides users in maintaining a controlled and steady breathing rate. This ensures effective lung exercise, promoting a more deliberate and deeper breathing rhythm. Premium Shatterproof Material: Made from top-tier medical-grade PC material, this incentive spirometer is designed to be both durable and shatterproof. The robust construction allows for regular use without the risk of , and the clear scale ensures easy monitoring of progress. Adjustable Target Slider: The innovative goal-setting slider on the device allows users to easily mark their progress and set new breathing targets. Whether tracking a previous measurement or setting a new goal, this feature helps users stay motivated and consistent in their lung training.