Features: This innovative Hygrometer Pen Holder combines STEM learning with creative fun, allowing kids to build their own functional desk organizers. Crafted from wood, this multifunctional stationery organizers features built in environmental sensors and ample storage space, a educational physics tool and practical desk accessory. Designed for youngly scientists and families seeking interactive STEM projects, it serves as a engaging educational craft for parent child collaboration and classroom science. Perfect for home study desks, school labs, or creative workspaces, its real time climate monitoring function helps children visualize environmental changes. Merging design with hands on physics education, this wooden STEM tool transforms ordinary stationery storage into a dynamic learning experience. Specifications: Materials: Wood Color: As The Picture Shows Package Weight: approx.110g Size: Mixed Size Package Includes: 1Pc Wooden Pencil Cup note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!