Allergy, Sinus & Asthma By DRUV

DRUV SPIROMETER/Respirometer/ 3-ball Lung/Respiratory Exerciser 3-ball Respiratory Exerciser (Pack of 1) - Product Features
  • 3-ball
  • INSTRUCTIONS FOR USE: Place the device at mouth level, exhale normally before inhaling., Inhale thoroughly until lifting the three balls (if, possible), Hold inspiration as long as possible., Remove the mouthpiece and exhale., Repeat the process.
  • Usage: Follow doctor's advice.
 


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