MTH Rail King,O gauge, Pennsylvania Locomotive set with ProTo Sound. This set is like brand new. It has been adult used only and comes with two additional cars and an optional charger for the sound so you don't have to leave the power pack on. It puffs smoke synchronized to train speed. I have over $500.00 invested in it. It has about a maximum of12 hours total time of use. It's very simple to program the sounds of the engineer, brakeman, etc. You can set it to automatically stop & play the pre-recorded sounds. This set is complete. I can send you pictures of all the cars, transformer, power pack etc. if truly interested. CONTACT ME.....Let's make a deal, make an offer!!