I love my son a little less, prefers the wooden train, manual, and make noise with his mouth, go figure ... on one side it's not so bad, ca saves me batteries, suddenly I could not give the consumer side view, because I have not changed them ... (after at least 2 months) but use level, I can say it working rather well, the sound effects are there but stop quickly to avoid becoming insuportables, the small light are made to effect when we lower the awning of the room ... it n ' but is not fast enough already to allow time for children to anticipate crossovers or other, it's not perfect, ca often derails the locomotive does not like tight turns, it hardly at certain bridges or if there are too many cars behind, but it can animate and create stories.