Description:Made by safe and non-toxic environmental wood;Great DIY toy for kids interests for learning of science and physics, developing children's structure imagination, and exercising your children hands on practical ability;Recognization: simple electric circuits and mechanical drives;Powered by 1 x AA batteries (Not Included)Applicable age: 7 - 12 years old;Specification:Size: approx

15 x 15 x 10

5cm/ 5

91 x 5

91 x 4

13inchPackage Includes:1 Set of DIY Mini Desk Lamp