Highlight description: Premium and Durable MaterialsThe domino train blocks set is made of high-quality ABS materials, which are BPA-free, safe, non-toxic, without harmful substances. Each edge of dominoes with a circular arc design is smoothly polished without burrs, do not hurt kids' little hands. Easy EntertainmentPowered by 2*AA batteries(not included), but the dominoes into the card clip and then put it on the train, the train will move forward and lay dominoes automatically while twisting left and right slowly. And it comes with a realistic train sound effect, which will increase the fun of playing with toys. Early Educational ToyThe Domino train blocks set can develop children's athletic ability, color cognitive ability, teamwork ability, and train their hand-on ability. And the colorful and beautiful appearance can stimulate their brain and thought development. Parent-children InteractionAutomatic domino brick-laying toy plays a significant role in parent-child relationships, spending nice time with kids, which can promote the relationship between parents and children during block playing. Great GiftThe train toy comes with a 1pc train, 60pcs dominoes, and 1pc cactus direction controller. It can be used as a Christmas gift, Halloween gift, and birthday gift for children 3+ years old, brings happy entertainment time for them. Detailed description: Product Name: Domino Train Set Material: ABS+Electronic Component Color: Dark Blue/Red(Optional) Power Supply: 2*AA Batteries(Not Included) Feature: Automatic Suitable for People: Unlimited Suitable Age: 3+ Years Old Domino Size: 2.5 x 18 x 0.5cm/1 x 7.1 x 0.2in(L x W x H) Train Size: 11 x 16 x 7.5cm/4.3 x 6.3 x 3in(L*W*H) Magazine Size: 18 x 4.5 x 2.5cm/7.1 x 1.8 x 1in(L*W*H) Package Size: 21 x 10.5 x 11cm/8.3 x 4.1 x 4.3in(L*W*H) Weight: 0.5kg/17.6oz Parts List: 1*Train 1*Magazine 1*Cactus Steering Controller 60*Dominos