This is a Hape light-up sound tunnel for a mine. Functionality confirmed. You can play with Brio rails and trains. It reacts to sensors, lighting up like a railroad crossing and making sounds like "clang clang clang" and "choo choo" when a train passes through the tunnel, which is fun. I'm selling this because I'd like a child who loves trains to use it. Batteries are included. No box or instructions. Thank you. I've only used it about twice, but it has a little dust on it. There is a little color transfer from the train on the rails. I have disinfected it with alcohol. Gender: Unisex #Brio #BRIO #WoodenRail #Tunnel #SoundTunnel #Plarail