The Athearn ATH72192 SD40-2 is a high - quality HO scale locomotive model. It comes with EMDX #6345 and features DCC and sound functions. EMD's features include being ex - MILW, having a short fuel tank, a Leslie 3 - chime horn, early radiator grilles, 2 different plows in a poly bag, a firecracker antenna, and a bell mounted behind the cab on the conductor’s side. EMD was well - known for building locomotives and had a lease fleet. Railroads could lease power from EMD, leaving EMD to handle maintenance. The SD40 - 2 locomotive itself is fully - assembled and ready - to - run. It has DCC - ready features with Quick Plug™ plug - and - play technology and a 21 - pin NEM connector. It's accurately scaled from prototype resources, with precise paint schemes. It has many detailed features like coupler cut levers, flexible rubber hoses, see - through cab windows, fine - scale handrails, photo - etch windshield wipers, and wire grab irons. The fuel tank is detailed, and it has separately applied air tanks. The sound - equipped models come with dual cube speakers, a Tsunami2 sound decoder, and can operate in both DC and DCC. The SD40 - 2 was introduced in 1972, known for its reliability and versatility, and became the best - selling model in EMD's history. Specifications include DCC, Tsunami2 sound, EMD as the prototype manufacturer, 6 axles, LED lighting, a minimum age recommendation of 14 years, and no assembly required.

Using this Athearn SD40 - 2 locomotive model is easy. Since it's fully - assembled, you can just take it out of the packaging and start running it on your track. It works with both DC and DCC systems. If you're using the DCC system, you'll be able to access full functions. When it comes to speed control, it offers precision slow - speed operation. For storage, keep it in the provided packaging which securely holds the model. As for maintenance, you can clean the wheels regularly to ensure smooth operation. Check the flexible rubber hoses and handrails from time to time to make sure they're in good condition. Remember, this model is recommended for users aged 14 and above due to small parts. Also, make sure to use a track with a minimum radius of 18 inches, though a 22 - inch radius is recommended for better performance.