From hudson
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Exerciser measures inspired air. Large volume measurement and advanced low-work-of-breathing filter. Compact, ergonomic design with built-in handle. Gradations on both sides of unit and good/better/best flow window for visualization of daily improvement. View more
Exerciser measures inspired air. Large volume measurement and advanced low-work-of-breathing filter. Compact, ergonomic design with built-in handle. Gradations on both sides of unit and good/better/best flow window for visualization of daily improvement.
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