Features:1. Automatic Laying Function - Dominoes will automatically cast the cards during the driving process after the placement is completed, and push the card and the dominoes will appear and have a chain-like effect that rolls like a race.2. Dominoes will automatically cast the cards during the driving process after the placement is completed, and push the card and the dominoes will appear and have a chain-like effect that roll like a race.3. This is a fun toy, especially if you and your kids/grandkids are domino racing fans, can also be used as Christmas gifts, Halloween gifts, children& 39;s birthday surprises, and jigsaw puzzles, giving children a happy entertainment time4. Our Domino Train Blocks Set can develop children& 39;s athletic ability, color cognitive ability, teamwork ability. Colorful and beautiful appearance can stimulate their brain and thought development.5. Can develop children& 39;s hands-on ability, color cognitive, artistic cognition, sensory, cognitive ability, imagination, and creativity.Notice:*Actual color may be slightly different from the image due to different monitor and light effect*Please allow 1-3cm deviation due to manual measurementDescription:Size: As the picture shownBattery: 1 x AA Battery (not include)includes:1 set x Domino Train Blocks Set