It runs off gravity

Composition: Heavy weighted brass construction and detail

Model Number: 27420

The Trainz SKU for this item is P12377795

Made to operate in tight quarters and on sharp curves

Williams 20725 Union Pacific F7 A-A Pwrd & Dmy Diesel Locomotive Set DwDetails-10.00-5.00-20.00-12.00-7.30-4 It runs off gravityFeatures: navigates 0 27 curves, AA length 27, height 4, 4 wheel power trucks, powered by dual motors, flywheel coasting action, all metal gears, electronic 6 amp reverse board, True Blast II digital horn and bell, durable ABS plastic shell, diecast trucks, truck sides, and pilots, front headlights and operating front couplers. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Williams Model Number: