I have a couple of Orbita winders, but after acquiring a couple more automatics, I had to take my Steinhausen winder out of storage. The Orbita instructions state that their winders have been tested and proven non-magnetic. Until I read that, I had never thought about magnetism as a problem with winders, but now I'm worried about the Steinhausen. The Steinhausen winder is much cheaper and, unlike the Orbita, the motor actually turns the watch for 30 seconds every 20 minutes, so it runs quite a lot. Should I worry about keeping a good watch on the Steinhausen for an extended period? Does someone here have the equipment to test the winder?