This N-gauge Class 321 4 Car EMU by Revolution Trains is a replica of a modern electric multiple unit that operates on a 2-Rail-2-Conductor rail system. The train features DCC sound fitted, runs on digital control system and is painted in London Midland's corporate livery.
This hasn't been used: I bought it from Revolution Trains. Since then it's been out its box, to be looked at, but I've never run it.
Posting to the UK only. I'll pay your postage.