Features: Practical spectrometer helps students fully understand light properties, ideal for optical studies and educational demonstrations. Learning more about science technology and physics experiments by our spectrometer. Easy to carry due to its light construction, it addresses the issue of traditional devices being heavy and difficult to move. Suitable for use in various classrooms and outdoor educational activities. Perfect for classrooms, school programs, libraries, and stem-loving families, and collaborative learning. Specifications: Size: about 14x23cm/5.51x9.06'' Package Includes: 1 Pc Spectrometer note: Please allow 1-3cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.