feature: 1. Automatic laying function - after the dominoes are placed, they will automatically throw the cards during the driving process, push the cards, and the dominoes will appear, and a chain effect will be generated, rolling like a race. 2. The dominoes will automatically throw cards during the driving process after the placement is completed, push the cards, and the dominoes will appear and produce a chain effect, rolling like a race. 3. It's a fun toy, especially if you and your kids/grandchildren are domino racing fans, it can also be used as Christmas gifts, Halloween gifts, kids' birthday surprises and jigsaw puzzles, bring joy to kids entertainment time 4. Our domino train building blocks set can develop children's motor ability, color recognition ability, teamwork ability. The colorful and beautiful appearance can stimulate their brain and thinking development. 5. It can develop children's hands-on ability, color cognition, art cognition, senses, cognitive ability, imagination and creativity. Notice: Due to different monitors and lighting effects, the actual color may be slightly different from the picture Please allow 1-3cm deviation due to manual measurement describe: Dimensions: as picture shown Batteries: 2 AAA batteries (not included) include: 1 set x Domino train building block set Shipping Quantity: 1 piece Package Contents: Only the above package content, other products are not included. Size: Package size: 26.5*8*14cm (Reminder: The size is measured manually, please allow 1-2cm measurement error) Color: multicolor (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.) Products from LUOLV's store