BRIO Controller After some research, it appears to be the 33510 Remote Control Travel Train, but I don't have the detailed specifications. It seems to be a rather rare item. The battery compartment is clean with no leaks, but I haven't been able to confirm its operation, so I'm selling it as a junk item. ※ I am also selling baby & kids' clothes. If you purchase multiple items, I can combine shipping and deduct the shipping cost, so please comment if you wish. (Petit main, Pairmanon, Devilock, Ampersand, Apres les Cours, F.O. Kids, Markey's, Cou Cou, Breeze, Shoolarue, Sisnon, Gap, GAP, UNIQLO, Uniqlo, gu, Nike, NIKE, Jordan, Anpanman, Thomas, Tomica, Plarail, Blocks, LEGO, Lego Duplo, etc. are on sale!)