Speed adjustment in one-scale-mile-per hour steps Volume Control Front & Rear Proto-Coupler Control Engine Start-up & Shutdown Sounds Activate Passenger Station and Freight Yard Sounds Whistle/Horn Control Bell On/Off Locomotive Direction Control Wireless Communication With DCS Remote Commander Receiver LED Power On Lamp (Receiver Only) AC or DC Power Input Remote Requires (2) AA Batteries (not included) Unit Measures:6" Long