The controllable balancing robot is mainly composed of wooden board, motor, four-board, antenna, DT21 shaft, wheel, bushing, screw button. This small scientific production can not only cultivate children's learning ability, hands-on ability and thinking ability, but also let children learn real scientific knowledge while having fun, and increase children's interest in endless exploration of the scientific world. High-quality wood is used as the main structural material of the model. Children can paint freely. High-quality accessories, stable and reliable. Electronic devices and accessories are used, and the performance is stable and reliable. Product : Explore Science Together Product name: Remote control balancing robot Product model: T-M197 Suitable age: over 7 years old Cultivate awareness: to cultivate children's hands-on ability, thinking ability, imagination and creativity. It's DIY kits, needs to finish by yourself. Colour:Wood Color Material:Wood Package Contents: 1set x Change Direction Balance Robot Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.