Sauna Heater, sauna stone is electrically heated. The sauna stone you mentioned is placed on the sauna stove. There are heating wires in sauna stove, which are heated by electricity. The heating wires heat up, and the sauna stone has temperature and emits mineral elements, which is beneficial to health. FENLIN was founded in 2004. As a 17-year-old enterprise, FENLIN factory not only pays attention to product quality, but also customer's consumption experience. There will be a professional team to serve you before and after you buy FENLIN SAV sauna heater, so as to help you find the right product for you as soon as possible! Therefore, please trust FENLIN in sauna stove system, and I believe we will bring you surprises!