Low Range (50-390 L/min) Personal Best Peak Flow Meter sets a high standard for compliance, convenience and confidence. Personal Best has an exceptional, compact, lightweight and sturdy structure that will fold into a self-contained protective carrying case. Patients are able to carry this meter with them at all times. Personal Best has a rugged construction that helps it stand up to the roughest use day after day. The oval mouthpiece and built-in handle encourages compliance and comfort with each use. The meter can be easily read and it has the NAEPP endorsed three-zone management system. Contents: one unit, daily record chart, instructions & companion card.