The Respironics Personal Best peak flow meter is an affordable device that can help you control your asthma. Daily measuring of how quickly you can expel air from your lungs can assist you in managing your condition. With a lightweight, self-contained, portable design, high legibility scale and three-zone management system, this meter puts peak flow monitoring at your fingertips all day long. Plus the rugged construction helps this unit stand up to the roughest use. The Personal encourages compliance with a comfortable oval mouthpiece and easy to use built-in handle. Includes Respironics Personal Best peak flow meter.