Specifications:Made from high quality wood material, this worm robot model is sturdy and durable.The edges are round and smooth without burrs, which won& 39;t scratch the hands easily.Kids can assemble the wood pieces together by themselves for a complete worm robot model.It helps to cultivate children& 39;s patience, concentration, thinking and operation, which is a perfect DIY gift.Item Name: DIY Assembly Robot ModelMaterial: Wood, Electronic ComponentsPower Supply: 2 x AA Batteries (Not Included)Feature: Interesting, Non-toxic, Teaching Aid, DIY GiftAssembled Size: 18cm x 5.5cm x 6cm/7.09" x 2.17" x 2.76" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;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 Robot Model