INCENTIVE TRAINING GAMES: When exercising, connect the electronic manometer with eRMT app to have 3 funny games by inhaling and exhaling through the device to make your training process more interesting and incentive.MEASURE MIP & MEP: The included electronic manometer can track your maximal inspiratory and expiratory pressure during lung exercising. It helps you better know your lung conditions.TRAINING DATE RECORD: By inhaling and exhaling through the device, theeRMTapp can track your MIP & MEP in real-time and record your MIP & MEP data, allowing you to see your improvement over time.36 COMBINATIONS OF TRAINING RESISTANCE: The breathing trainer offers 6 resistance levels for both inhaling and exhaling. The higher the number, the greater the resistance. It makes your training more scientific.PACKAGING INCLUDES: lung exerciser device & electronic manometer & testing mouthpiece & travel case & connection tube & nose clip.