Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Stopped working after a few days

This really is a nice looking little engine with a hefty die-cast metal feel to it. Unfortunately, the one I got stopped working after a few days. I could tell it was a loose connection in the button because, for a while, we could get it to work by jiggling the button. But after a while, even jiggling didn't make it work.Note, I have since switched to Tomica plastic tracks and trains. They are really a much better solution for self propelled toy trains for 4+ year olds.