MTH20-3102-1 Southern 4-6-2 Ps 4 Steam Engine. This is a scale-length model of the legendary \"Crescent\" Ps-4 Pacific Locomotives from 1926. Features include: die-cast boiler and tender body, die-cast metal chassis, authentic paint scheme, metal wheels and axles, constant voltage headlight, die-cast truck sides, precision Pittman flywheel equipped motor, locomotive speed control, remote controlled Proto-Coupler, engineer andfireman figures, operating firebox glow, metal handrails and decorative bell, decorative metal whistle, operating marker lights, lighted cab interior, synchronized puffing ProtoSmoker system, Proto-Sound 2.0 with The Digital Command System Featuring: Passenger Station Proto-Effects, Unit Measures:23 7/8 x 2 7/16 x 3 7/8, and operates on O-31 curves.