Description This diaphragm movement simulation experiment device is designed to accurately demonstrate lung breathing mechanics. The model replicates human lung function, making it an ideal tool for biology experiments. Its realistic design helps students visualize and understand the respiratory process, enhancing their learning experience. Features -Color:Assorted Color -Material:Plastic -Size:21.00X11.00X11.00cm/8.25X4.32X4.32in -Realistic simulation: this lung breathing model accurately simulates human lung respiratory movements, making it ideal for middle school biology experiments -Diaphragm movement: the diaphragm movement simulation device helps students understand the breathing process by demonstrating the role of the diaphragm in respiration -Detailed structure: the model realistically replicates lung structures, enhancing students' understanding -Adjustable settings: the model allows for adjustable breathing frequency and depth, catering to various experimental needs -Userfriendly: simple and easy to use, this model is for both teaching and research purposesPackage list: Lung breathing model*1 Respiratory model