Champion is a name used by the former East German company, Ruhla / UMF.
They were known for making rather cheap, pin pallet movements: at their peak, the factory turned out 25,000 Ruhla Calibre 24 movements per day!
But this watch houses the much rarer UMF Calibre 25; in fact, it seems to be very rare! It is also a quality movement that is fully jewelled.
This true electric movement (no electronics) is very similiar to the Hamilton 505 and, in some design areas, is better than the Hamilton.