Material: The train and dominoes are made of safe and environmentally friendly plastic. They are non-toxic, durable, and not easily broken. The train includes electronic components and operates automatically. Dimensions: Draw rope size: 16 x 7 x 33 cm. Block size: 1.8 x 3.4 cm. Cactus size: 6 x 5.5 cm. Design: Features a unique shape and automatic domino release mechanism, differing from traditional domino sets to attract children's attention. Play is quick and convenient. The dominoes have rounded edges to ensure child safety. The train includes sound and light effects to enhance play experience. Development: Helps develop children's fine motor skills, color recognition, teamwork, artistic perception, sensory and cognitive skills, social interaction, imagination, and creativity. Use: The train automatically releases the dominoes. Simply place the dominoes in the holder, insert the train, and turn on the switch for the sound and light function. Requires 2 AA batteries (not included).