The question of whether the product works at 50/60 Hz cannot be answered directly from the information provided. As a rule, electrical appliances in Europe are designed for 230 volts and 50 Hz. If the product is intended for the European market, it should be compatible with 50 Hz. For a definitive answer, it would be advisable to consult the manufacturer's technical specifications or enquire directly with Koenig.
Dear Tanja_ag, this raclette is not made of wood but of bamboo. Bamboo is much more robust and not as fibrous as wood, which makes it more difficult to pick up dirt. In addition, the bamboo has been additionally treated so that precisely these unsightly marks do not occur.