There is a red circle that is supposed to indicate when the pan is hot; but I can not really see the difference! Apart from this detail, these stoves are convenient, removable handle with the supplied; their design is boilerplate, that Brown not "top", but it was to replace my previous Tefal who lived four years, which were also stainless steel for induction, and a little larger than them; I preferred the previous brief, but they are in very good promo.
