The Märklin 3031 Tender Locomotive BR 81 004 DB is a highly detailed and authentic model of a steam locomotive from the Deutsche Bundesbahn. This replica of the BR 81 features realistic details. With its analog control system and alternating current power type, this locomotive is perfect for collectors and hobbyists looking to add a classic piece to their model railroad collection. It has been tested by our techs- his notes read: Lights work Reverse works Wheels turn, works ok- some sparking