Description The lung breathing model designed to simulation the human lung's respiratory movements. This model as an essential tool for teaching and scientific research. Its compact and portable size makes it easy to carry and operate, ideal for various settings. Features -Color:Multi -Material:Plastic -Size:13.00X7.30X4.30cm/5.11X2.87X1.69in -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 -DIY settings: the model allows for adjustable breathing frequency and depth, catering to various experimental needs -User-friendly: simple and easy to use, this model ideal for both teaching and research purposesPackage list: 1 x lung breathing model