Infinite Loop! Electric Rolling Rail Block, 399pcs. You can assemble it to create your own original course. It's an electric type that lifts the balls when the power is turned on, and the target age is 8 years old and up. One AAA battery (sold separately) is required. Ships within 24 hours! [Product Name] Infinite Loop! Electric Rolling Rail Block [Quantity] 399pcs [Target Age] 8 years old and up [Batteries Used] 1 AAA battery (sold separately) [Product Condition] Brand new, unused Although it is new and unopened, it is a prize item, so there may be scratches or dents on the box. Thank you for your understanding. Thank you.