Dual-Mode Lung Workouts: Our 3-Ball Lung Exerciser both inhalation and exhalation exercise modes, providing a comprehensive respiratory fitness routine for improved lung capacity and strength. Customizable Volume Range: With an adjustable air vent, you can tailor your lung exercises to your specific needs. The volume measurement range can be easily modified from 300cc/sec to an impressive 1600cc/sec, accommodating users of all fitness levels. Enhanced Lung Function: Promote respiratory muscle and endurance. Train your lungs to breathe more efficiently, increase oxygen intake, and deep breathing during exercise. Track Your Progress: Monitor your improvement over time with precise volume measurements. Our 3-Ball Lung Exerciser empowers you to set goals, track your lung capacity gains, and maintain optimal respiratory performance. The mouthpiece and tube can be freely disassembled and assembled for easy cleaning. After use, keep the device clean by placing it in a ventilated and dry place.