Here is a MTH 20-5637-2 Tuscan Crocodile Electric Engine With Proto-Sound 3

Patented Adjust-A-Coupler(TM) system for horizontal adjustment of couplers and spacing between cars

Odyssey II Speed Control with On/Off switch

Model Number: 6-49929

All-wheel drive with precision gears for smooth and quiet operation

Broadway Limited 3498 N Unpainted EMD F3A Diesel Loco Paragon3 Sound/DC/DC ProductID_12301461 Here is a MTH 20-5637-2This is a Broadway Limited 3498 N Scale Unpainted EMD F3A Paragon3 Sound DC DCC. Industry Leading Features: NEW Paragon3 Sound & Operation System FEATURING ROLLING THUNDERTM with Authentic Sounds and Prototypical Operation in both DC and DCC environments, Integral DCC Decoder with Back EMF for Industry Best Slow Speed Operation in DC and DCC, Precision Drive Mechanism engineered for continuous heavy load towing and smooth slow speed operation, Premium