Specifications: Made from eco-friendly wood material, this model is sturdy and durable without cracking. There is no burrs on the round and smooth edges, which won't scratch the hands easily. It is a perfect choice to cultivate children's patience, concentration, thinking and operation ability. Teachers can also use this DIY model to teach students about the principles of physics experiments. Item Name: DIY Assembly Airplane Model Material: Wood, Electronic Components Power Supply: 2 x AA Batteries (Not Included) Feature: Interesting, Non-toxic, Fine Craftsmanship, Great Gift Assembled Size: 19cm x 16cm x 10cm/7.48" x 6.30" x 3.94" (Approx.) Notes: 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. Package Includes: 1 Set of DIY Assembly Airplane Model