คุณลักษณะ

• It is a respiratory trainer that can perform the maximum inspiratory sustained method to inflate the lungs slowly and widely.
• The ball moved by the intake air and the face mark confirm the correct intake air velocity.
• The effect of the practice can be read on the scale, and it is easy to set the goal of the practice and check the achievement.
• The scale is printed on both sides, so it can be checked not only by patients but also by healthcare professionals.