Description: Earth Quake Science Set: Earth Quake alarm toys Suitable for kids and teens to make earth quake alarm. Scientific Experiment Toy Set: Earth Quake alarm toys is a very practical teaching model. Educational toys are perfect use textbook knowledge into practical life. Easy to Assemble: The Earth Quake Science toy material package needs to be assembled manually, and children can assemble it with their families to cultivate feelings. Educational Toys: Science toy with fine workmanship, not easy to wear and tear, very practical in use.Though simple in design, its so practical when you use it. Perfect Gifts: Great for DIY subject, science education, development of hobbies and interest. A wonderful birthday gift toy/collectibles for kids and adults. Specification: Material: Plastic Size Chart: Assembled size: 3.5cmx10cmx10cm/1.38inchx3.94inchx3.94inch Package Includes: 1Earth Quake Science Toy Set (Need to Assemble) Note: 1.This is not infant toy, please take away from children to avoid eating.2.Please allow slightly errors due to manual measurement and different monitors.