Simple and easy to understand: DNA model double helix structure design is simple, perfect and wonderful, suitable for students and biology enthusiasts to explore the molecular world. Easy to use: The molecular model kit can be detached and separated for further in Spectrum, easy to disassemble and place. ADVANCED LEARNING AID: Kids bring learning to life and foster creativity with this interactive science educational toy. Professional DNA double helix structure model, allowing you to easily understand biological termsMater ial: The battery model is made of high-grade materials, safe and durable, not easy to break, and can be reused for a long time. Service: The exquisite workmanship and simple design of the atomic model ensure its practicality and popularity. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.