Product Description Wooden Coin-Eating Robot, DIY Model, Educational, STEM Education, Children's Project Kit, Science Experiment, Wooden Assembly Kit You're not just buying a family science toy; you're also reflecting a sense of responsibility and attitude between parents and children. Cognitive Development: Cultivates children's hands-on skills, hand-eye coordination, thinking abilities, intelligence, and scientific exploration. Let children experience a sense of accomplishment and satisfaction through hands-on practice, growing through learning. Handmade with a mechanical combination lock for digital unlocking. All combination wheels rotate to the correct position; simply press the button to unlock. No power or key required. Simple structure, easy to assemble. Once completed, children can store their toys or pocket money inside. Special fitting design, no glue required. Simply remove the parts from the plywood to begin a fun and intellectually stimulating assembly journey. Knowledge + Skills Education = Competitiveness Suitable Age: 5 years and up Batteries: 2 AA batteries (not included) Note: Please be careful when assembling products that require circuitry. Connect the blue wire to the positive terminal of the battery compartment. Connect the blue wire to the negative terminal of the battery compartment. Batteries, paint, and glue are not included. Accessory colors are random and cannot be specified. Please read carefully before purchasing. Includes small accessories and small items. Children should use under adult supervision. Keep out of reach of children. Parts are loose and require assembly; batteries are not included. Color: As pictured Material: Wood Package Contents: 1 x Coin-Operated Robot Only includes the above package contents; other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. The allowable measurement error is +/- 1-3 cm.