OPUMP Breathing Trainer is the world's first intelligent respiratory training device that aims to develop, improve and maintain respiratory health through breathing exercises for people without and with conditions including COPD, asthma, and other chronic respiratory diseases. OPUMP Breathing Trainer records each vital capacity testing and provides different breathing training courses and fun games with an intelligent app. In addition, OPUMP Breathing Trainer is equipped with inspiratory volume and inspiratory speed indicator, which can be used as a real-time tester and trainer alone.