Bộ đồ chơi làm thí nghiệm khoa học độc đáo thú vị cho các bé

1.Type: DIY Electronic Floating Ball Kits 2.Material: Electronic Components 3.Power: 2 x AA Battery (Not Included.) 4.Size:14*11.5*9.5cm 5.WoodHealthy and Eco-friendly materials,edutainment. 6.Extensive children knowledge in Bernoulli effect and air pressure. 7.DIY science kits toy make children's own toy. 8.It Can excite children's curiosity and promote imagination, developing intelligence, exercising the ability of using hands and brain. 9.Parents and children to assemble it together to improve parent-child relationship. 10.It's useful for keeping track of unproductive habits, like play phone and online game for a long time. 11.Healthy and Eco-friendly materials,edutainment. Package includes: 1 * DIY Science Kits toy 1 * Instructions