Breathing Exercise Device for Lungs, Deep Breathing Trainer for Adults - 5000ml Volume Measurement with Flow Rate Indicator Curing Lamps Measuring Range: 4 –13% A1c

Measuring Range: 4 –13% A1c (20 –120 mmol/mol)

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Breathing Exercise Device for Lungs, Deep Breathing Trainer for Adults - 5000ml Volume Measurement with Flow Rate Indicator Curing Lamps Measuring Range: 4 –13% A1cBrand: TyeinGo Color: Transparent Features: Leading 5000ml Capacity: Our device offers an impressive maximum capacity of 5000 milliliters (5 liters), providing a much broader range for precise lung capacity measurement, allows for a more thorough evaluation of lung health. Enhance Breathing Techniques: Use the device to practice taking slow, deep breaths exercises, improve oxygen flow, and expand the lungs. Flow Rate Indicator: Use the indicator to