Exhaled-air pressure measuring device

An exhaled-air pressure measuring device, comprising:

• a blowout connection portion;
• a mouthpiece portion configured to be held by a user in the mouth such that air is exhaled by the user, wherein the mouthpiece portion is in fluid communication with the blowout connection portion;
• an indication section;
• and
• a measuring device body which measures the pressure of the exhaled air into the mouthpiece portion by the user, and on the basis of a result of the measurement, decides on an exhaled-air pressure level which corresponds to the pressure of the exhaled air, wherein the measuring device body comprises:
• a storage section for storing threshold data representing predetermined thresholds of a plurality of the exhaled-air pressure levels, the predetermined thresholds corresponding to a plurality of types of blowouts suitable for different usage purposes;
• a deciding section for deciding on the exhaled-air pressure level from the result of the measurement on the basis of the predetermined thresholds;
• and
• a terminal connected to an external storage device so that the external storage device accesses the storage section,
• wherein the external storage device is configured to replace the threshold data with other threshold data upon connection via the terminal, wherein the indication section is configured to provide a level indicator for indicating whether a blowout connected to the blowout connection portion is suitable for a usage purpose based on the exhaled air pressure level of the user exceeding one of the predetermined thresholds.